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The HG Care Hub™
Welcome.
You don't have to figure this out alone.
Whether you think you have Hyperemesis Gravidarum, were diagnosed yesterday, have been navigating it for months, or you're supporting someone you love — you've found a place designed to help you navigate this journey with trusted information, practical resources, and a compassionate community.
Before You Begin
The information in the THON HG Care Hub is designed to help you better understand Hyperemesis Gravidarum (HG), recognize important warning signs, and prepare for informed conversations with your healthcare team.
Our educational resources are based on current clinical guidelines, peer-reviewed medical literature, and patient-centered health education principles. They are intended to provide trustworthy education — not to replace the advice, diagnosis, or treatment provided by your physician or another qualified healthcare professional.
Every pregnancy is unique. If you have questions about your symptoms or treatment, please contact your healthcare provider.
If you are unable to keep food or fluids down, think you may be dehydrated, experience dizziness or fainting, have a rapid heartbeat, severe abdominal pain, vaginal bleeding, or believe you are experiencing a medical emergency, contact your healthcare provider immediately or seek emergency medical care.
Our goal is simple: to help you become informed, prepared, and confident when discussing your care with your healthcare team.
Evidence-Informed • Patient-Centered • Created to Support Conversations with Your Healthcare Team
New to HG? Start Here
Is this more than morning sickness?
Not sure if what you're experiencing is normal? Learn the warning signs of Hyperemesis Gravidarum, understand when symptoms may require urgent medical attention, and discover what steps to take next.
A gentle, educational guide — not a diagnostic tool.
Start Here
Wherever you are starting from, welcome. You are in the right place.
If you have found your way to this guide, something is probably wrong. Maybe you are pregnant and sicker than anyone told you was possible. Maybe you are a partner watching someone you love disappear into nausea and exhaustion. Maybe you are a parent, a friend, or a nurse looking for words that actually help.
Hyperemesis Gravidarum affects an estimated 0.3 to 3 percent of pregnancies. That may sound small until you do the math: in the United States alone, tens of thousands of women experience HG every year. Behind each of those numbers is a woman who likely felt, at some point, that no one understood what she was going through.
Many women with HG describe the same painful pattern: they knew something was wrong, but the people around them, and sometimes even their care providers, told them it was just morning sickness. If that has happened to you, please hear this clearly: severe, persistent vomiting in pregnancy is not normal, it is not a character flaw, and it deserves medical attention. The research community now understands HG as a biologically driven condition. Being sick is not your fault.
Why this resource exists
THON built the HG Care Hub because the gap between what science knows about HG and what patients are told about HG is too wide. Clinical guidelines support early treatment. Genetic research has identified biological causes. Advocacy organizations have documented the real toll of this condition for decades. And yet women still routinely wait too long for care, are dismissed too easily, and are sent home without the information they need.
This guide exists to put that information directly into your hands, in language you can absorb even on your worst day, so that no woman has to become an expert in HG the hard way, alone.
How to use the HG Care Hub
This guide is designed to be used, not just read. You can read it front to back, or you can go straight to what you need today:
01Trying to figure out whether this is more than morning sickness? Start with the symptom guide — a side-by-side comparison, a full symptom guide, and clear guidance on when to seek care.
02Diagnosed and want to understand the condition deeply? Learn About HG covers the history, science, diagnosis, treatment overview, complications, recovery, and future pregnancies.
03A partner or family member? Read the sections marked for families, and pay special attention to the symptom and emergency guidance. Your ability to recognize danger signs may matter enormously.
04Preparing for an appointment? Every chapter ends with a list of questions to ask your healthcare provider. Bring them with you, on paper or on your phone.
Throughout the Care Hub you will see callout boxes: Clinical Pearls translate medical insight into practical understanding, Key Takeaways summarize each chapter, and emergency boxes tell you when to act immediately.
Key Takeaways
01HG is a real, biologically driven medical condition, not weakness and not ordinary morning sickness.
02HG affects an estimated 0.3 to 3 percent of pregnancies. You are not alone, and support exists.
03The core pattern: severe persistent nausea and vomiting, trouble keeping food and fluids down, dehydration, and weight loss.
04Early recognition and early treatment change outcomes. Report symptoms sooner than feels necessary.
05Know the emergency signs, and act on them without hesitation.
Preparing for your appointment
Your Next Conversation
Preparing for an appointment can feel overwhelming, especially when you are not feeling well. These conversation starters can help you have a more informed discussion with your healthcare provider. Depending on what you learn together, THON can help guide you to additional resources throughout your HG journey.
01
Conversation starter
Based on my symptoms, do you think this could be Hyperemesis Gravidarum rather than typical morning sickness?
Why this matters
An accurate diagnosis is one of the most important first steps toward appropriate treatment and preventing complications. Naming the condition is what allows a care plan to begin.
Continue your journey
Depending on your discussion with your healthcare provider, these resources may be helpful.
If HG is suspected
If the diagnosis is still uncertain
If your symptoms change or worsen
02
Conversation starter
What symptoms should prompt me to call your office, and which ones mean I should go to the emergency department?
Why this matters
Knowing the threshold in advance removes the hardest decision from the hardest moment. Most women delay care because no one told them clearly where the line is.
Continue your journey
Depending on your discussion with your healthcare provider, these resources may be helpful.
To prepare before you need it
If a hospital visit becomes likely
So the people around you know too
03
Conversation starter
How will we track my weight, hydration, and lab work as this pregnancy continues?
Why this matters
Care decisions in HG are driven by trends rather than single days. Agreeing on what gets measured, and how often, is what makes escalation possible before you become severely unwell.
Continue your journey
Depending on your discussion with your healthcare provider, these resources may be helpful.
To keep your own record
If monitoring shows you are declining
04
Conversation starter
What treatment options are appropriate for me right now, and at what point would we add more?
Why this matters
HG is managed in steps. Understanding the sequence in advance means that if one treatment stops working, you already know it is expected — not a sign that you are failing.
Continue your journey
Depending on your discussion with your healthcare provider, these resources may be helpful.
To understand the options
To track what is and is not working
If treatment is not holding
05
Conversation starter
Who do I contact after hours if I cannot keep fluids down?
Why this matters
HG does not keep office hours. A named contact and a clear route to help is often the difference between early treatment and an emergency admission.
Continue your journey
Depending on your discussion with your healthcare provider, these resources may be helpful.
To prepare the household
If you need to go in
06
Conversation starter
Is there a nurse line, HG protocol, or urgent hydration option in this practice or hospital system?
Why this matters
Some practices have rapid hydration pathways that avoid an emergency department entirely. Asking is often the only way to find out that one exists.
Continue your journey
Depending on your discussion with your healthcare provider, these resources may be helpful.
To make the most of your appointment
To understand the standard of care
Suggested THON downloads
THON Takeaway
Severe, persistent vomiting in pregnancy is not normal, it is not a character flaw, and it deserves medical attention. Being sick is not your fault.
Where are you on your journey?
Begin wherever you are. Every path stays open — you can explore the whole Care Hub at any time.
Start here
I think I have HG
Learn the signs and symptoms, how HG differs from morning sickness, and when to contact your provider or seek emergency care.
Begin this path →
Living with HG
I've been diagnosed
Treatment options, medications, nutrition, hydration, daily survival, and preparing for appointments.
Begin this path →
Urgent support
I need help today
Emergency warning signs, dehydration guidance, hospital preparation, practical survival resources, and urgent support information.
Emergency warning signs→
Dehydration guidance→
Preparing for the hospital→
Or find your stage
Hyperemesis Gravidarum is not one experience — it changes month to month, and so does what you need. Choose the stage that sounds most like today, and we will show you what to know, what to do next, and where to find more help.
Stage 01 of 08
I think something is wrong
If you are sicker than anyone told you was possible, trust that.
What do I need to know?
Severe, persistent vomiting in pregnancy is not ordinary morning sickness and it is not a character flaw. HG has recognised biological causes, and early treatment changes outcomes.
What should I do next?
Start a written record today, then call your provider — sooner than feels necessary. Concrete numbers get faster care than descriptions do.
Where can I find more help?
If you have already been dismissed once, bring someone with you to the next appointment and bring your record.
These stages are a way to find what you need faster — not a description of how your pregnancy is supposed to go. Many women move between them, or sit in more than one at once.
Stage 02 of 08
I was recently diagnosed
Being named is the beginning of being treated.
What do I need to know?
A diagnosis means your care team can now act: medication, hydration, monitoring, and a plan for what happens if it worsens. Understanding the condition makes you a participant rather than a passenger.
What should I do next?
Set up your record now, while you have the capacity. Ask your provider directly what the plan is if you get worse tonight, and who to call after hours.
Where can I find more help?
Give the people around you something to read so you are not the one explaining this over and over.
These stages are a way to find what you need faster — not a description of how your pregnancy is supposed to go. Many women move between them, or sit in more than one at once.
Stage 03 of 08
I'm getting worse
Escalating is not overreacting. It is the treatment working as intended.
What do I need to know?
HG is managed in steps. If your current treatment is not holding — weight falling, fluids not staying down, medication no longer helping — that is information your care team needs, not a sign you are failing.
What should I do next?
Call today, not at your next appointment. Bring the numbers: weight change, episodes per day, hours since fluids stayed down, urine colour.
Where can I find more help?
IV fluids and hospital care are normal, appropriate HG treatment — going early is better than going late.
These stages are a way to find what you need faster — not a description of how your pregnancy is supposed to go. Many women move between them, or sit in more than one at once.
Stage 04 of 08
I need emergency care
You do not need permission, and you do not need to wait until morning.
What do I need to know?
Go now if you cannot keep any fluid down for 12 hours, are not urinating, feel faint or confused, have a racing heart, severe abdominal pain, vaginal bleeding, or are vomiting blood.
What should I do next?
Take your medication list and your tracker. Say plainly: "I have Hyperemesis Gravidarum, I cannot keep fluids down, and I need IV hydration and antiemetics."
Where can I find more help?
Ask before discharge: what changed, what to do if it returns tonight, and who to call. Do not leave without a plan.
These stages are a way to find what you need faster — not a description of how your pregnancy is supposed to go. Many women move between them, or sit in more than one at once.
Stage 05 of 08
My family needs help
HG happens to a household — everyone in it deserves guidance.
What do I need to know?
The people around you want to help and usually do not know how. Most of what helps is not medical: taking over the invisible work, keeping the record, advocating in the room, and believing her out loud.
What should I do next?
Hand the right page to the right person. Partners get the orientation guide and daily checklist; family and friends get the support guide and the words that land.
Where can I find more help?
Caregivers need care too. Depleting the person holding everything together helps no one.
These stages are a way to find what you need faster — not a description of how your pregnancy is supposed to go. Many women move between them, or sit in more than one at once.
Stage 06 of 08
I'm trying to keep working
Whether you keep your job should not depend on how well you can explain this.
What do I need to know?
Employment protections for pregnancy-related conditions vary by jurisdiction; in the United States the Pregnant Workers Fairness Act, the ADA, and FMLA may apply. Written accommodation plans hold better than repeated verbal requests.
What should I do next?
Do not go into the conversation alone or unprepared. Send the employer briefing ahead, then work through the accommodations checklist together and write down what was agreed.
Where can I find more help?
Ask your provider for documentation in writing, and confirm confidentiality and pay arrangements explicitly.
These stages are a way to find what you need faster — not a description of how your pregnancy is supposed to go. Many women move between them, or sit in more than one at once.
Stage 07 of 08
I've had my baby
For most women the vomiting ends. The recovery does not end with it.
What do I need to know?
Symptoms usually resolve after delivery, but the effects of prolonged malnutrition, dehydration, dental damage, and months of illness often persist. Needing help now is expected, not ungrateful.
What should I do next?
Book the appointments people forget: dentist, postpartum follow-up, and a conversation about your mood. Start eating on a schedule rather than by appetite.
Where can I find more help?
Support usually disappears right when it is still needed. Tell one person honestly how you are, and say what would help this week.
These stages are a way to find what you need faster — not a description of how your pregnancy is supposed to go. Many women move between them, or sit in more than one at once.
Stage 08 of 08
I'm recovering
It is possible to love your baby and still be recovering from what it took.
What do I need to know?
Anxiety, low mood, and post-traumatic stress following HG are well documented and treatable. So is the physical toll. Many women also carry questions about whether they could face another pregnancy — that question deserves real information, not reassurance.
What should I do next?
Name what is still unfinished — dental work, weight, sleep, mood, your relationship, your sense of yourself — and take one of them to a clinician who will take it seriously.
Where can I find more help?
A dedicated THON Recovery Center is in development, covering physical, dental, emotional, and relationship recovery.
These stages are a way to find what you need faster — not a description of how your pregnancy is supposed to go. Many women move between them, or sit in more than one at once.
Supporting her
Partners
I'm a partner
The Partner Journey™ — eight stages, from the first symptoms to recovery.
Begin →
Family & friends
I'm supporting someone with HG
Resources for family members and caregivers walking alongside her.
Begin →
Clinicians
I'm a healthcare professional
Evidence-based resources, trusted organizations, and future provider tools.
Begin →
Workplaces
I'm an employer
The HG Workplace Center™ — guidance for HR, managers, and employees.
Begin →
This isn't a forced journey — just a compassionate place to begin where you are today.
The Founding Center of Excellence
Hyperemesis Gravidarum didn't create our mission. It revealed it.
For too long, women with Hyperemesis Gravidarum were told it was ordinary morning sickness — left to carry the physical, emotional, nutritional, and financial weight of it, and to coordinate their own scattered care, through one of pregnancy's most debilitating conditions. HG did not only expose a gap in one diagnosis. It exposed the fragmentation running through all of women's healthcare.
THON was built so that women facing HG — and, in time, every woman — would meet coordinated expertise, unbroken continuity, and genuine compassion instead. This is where the mission began. It is not where it ends.
The Care Hub is that mission, made real — the first place you can feel all three of THON's foundations at work.
Expertise
Centers of Excellence™
Evidence-informed education built on clinical guidelines and research — the understanding a scattered system rarely puts in her hands.
Coordination
THON 360 Care System™
One place that gathers what she needs — from first questions to emergency guidance to appointment preparation — so she is never the one holding it together.
Human Experience
The Thread™
Written to be absorbed on her hardest day, in language that tells her she is believed — so she is never alone in it.
Guides & Resources
Support for her — and everyone around her.
For her
HG Survival Guide™
Practical guidance, checklists, hospital preparation, nutrition tips, and daily survival strategies designed for women navigating Hyperemesis Gravidarum.
Read the guide →
For the ones who love her
The Partner Journey™
A stage-by-stage companion for the person beside her — from the first sense that something is wrong through to recovery.
Read the guide →
For workplaces
The HG Workplace Center™
Practical guidance for HR, managers, and employees — conversations, accommodations, and the return to work.
Read the guide →
In remembrance
HG Legacy Project™
Honoring the women, babies, and families whose experiences continue to inspire change in women's healthcare.
Read the guide →
Part of The Thread™
Every path here belongs to one connected care system.
Wherever you begin, The Thread™ holds your journey together — so nothing about your experience becomes fragmented again.
The HG ecosystem
More than information — a system of support.
The HG Toolkit Library™
Print-ready trackers, checklists, and guides — for her, for partners, for families, for employers, and for clinicians.
Open the Library →
HG Stories™
Real stories from women, partners, and families whose lives have been impacted by Hyperemesis Gravidarum.
Read the stories →
Coming Soon
HG Community™
A compassionate community of women and families who understand — arriving soon.
Be the first to know →
"You don't have to carry this alone."
This is a place to be heard, supported, and understood.
You are not alone.
While our community shares experiences and encouragement, it does not replace medical care. If you are experiencing worsening symptoms or believe you need urgent care, please contact your healthcare provider or seek emergency medical attention immediately.
Download resources
Tools you can hold in your hand.
Every resource is print-ready, works on a phone in the exam room, and includes space for your own notes.
Track
Daily Symptom Tracker
Track
Daily Hydration Log
Track
Medication & Treatment Journal
Appointment
Questions for My OB Appointment
Prepare
Hospital Visit Checklist
Safety
Emergency Symptoms Checklist
Partner
How to Help Someone with HG
Employer
Understanding HG at Work
Related resources
Continue where it makes sense for you.
Is this more than morning sickness?A gentle self-assessment and the warning signs that matter.→
Learn about Hyperemesis GravidarumThe condition in full — science, diagnosis, treatment, recovery.→
The HG Toolkit Library™Every print-ready resource, organized by who needs it.→
The Partner Journey™Eight stages for the person walking beside her.→
The HG Workplace Center™For HR, managers, and employees navigating HG at work.→
What you can do today
You do not have to do all of this. Choose one.
On the hardest days, a single small step is enough. Each of these takes a few minutes and makes the next conversation with your care team easier.
Start tracking your symptomsTwo minutes a day. The record that gets you faster care.→
Review the dehydration warning signsDecide now what you would otherwise decide at 2am.→
Prepare questions for your next appointmentTwelve pre-written questions, with space for the answers.→
Begin a medication logWhat you take, and whether it helps.→
Share a guide with your partnerSo you are not the one explaining this over and over.→
Find your stage on the journeyEight stages, each with what to know and what to do.→
You’re Not Alone
Whether you are experiencing Hyperemesis Gravidarum, supporting someone you love, caring for a patient, or helping an employee navigate HG — support is available.
Your next step might be
Learn something newUnderstand the condition, the evidence, and what to expect.
Download a practical toolTrackers, checklists, planners — print-ready and free.
Connect with supportFind people and organizations who understand HG.
Explore workplace resourcesGuidance for HR, managers, and employees.
Support someone you lovePartner, family, and friend resources.
Prepare for your next appointmentQuestions written out, and a record to bring.
Continue your recovery journeyBecause recovery does not end at delivery.
Every HG journey is different, but no one should have to navigate it alone.
We are here to help you take your next step.
Community connections
Support doesn’t end here.
Explore trusted resources that can help you through every stage of the HG journey. As THON grows, this becomes a curated directory of community partners and support services — if you know of one that belongs here, we would like to hear from you.
Emotional SupportIn development→
Community OrganizationsIn development→
Financial AssistanceIn development→
Transportation ResourcesIn development→
Employer ResourcesAvailable now→
Partner ResourcesAvailable now→
Family ResourcesAvailable now→
Support GroupsIn development→
Healthcare ProvidersAvailable now→
Emergency Care InformationAvailable now→
Local Community PartnersIn development→
National OrganizationsIn development→
You are not alone.