Skip to content
THON
The House of Nirvana (THON)
Donate
Unable to keep fluids down for 12+ hours, or feeling faint? Go to I Need Help Today →
Navigating Your Care · Volume II · Chapter Four

I Think I Have HG

Suspecting is the hardest part. This chapter turns suspicion into a plan — so your first appointment counts.
Reading time11 minutes
Last reviewedJuly 2026
Medical reviewerTHON Medical Review Board
Evidence level● Established, with expert consensus labeled

Why This Matters

There is a moment many women with HG describe: the quiet realization that this is not what everyone said it would be. If you are in that moment now, this chapter matters because what you do in the next days can change the course of your pregnancy. HG treated early is easier to control than HG treated late. Women who arrive at their first appointment with documented symptoms are diagnosed sooner, treated sooner, and hospitalized less. You do not need to be certain you have HG to act — you only need to take what you are experiencing seriously. We already do.

What You'll Learn
01The early warning signs that suggest HG rather than typical morning sickness
02How to document your symptoms so your provider can act quickly
03How to prepare for your first appointment — what to bring, say, and ask
04How to recognize dehydration and know when to call, and when to go
05How to advocate for yourself — including what to do if you feel dismissed

Recognizing the early warning signs

Hyperemesis Gravidarum rarely announces itself all at once. It usually begins as nausea that seems ordinary, then crosses lines that ordinary nausea does not cross. These are the signs that what you are experiencing may be more than morning sickness:

  • Nausea that lasts most or all of the day, not just mornings
  • Vomiting several times a day, or vomiting that is increasing week over week
  • Meals you cannot finish — then meals you cannot start
  • Fluids becoming difficult: sips coming back up, fear of drinking
  • Weight loss, or clothes fitting looser in early pregnancy
  • Urine that is darker than usual, or urinating less often
  • Dizziness when you stand, or a racing heart
  • Being unable to work, drive, or care for your family because of nausea

One of these alone can still be within the range of normal pregnancy sickness. Several together — especially trouble keeping fluids down, weight loss, or dark urine — are a signal to contact your provider now rather than waiting for your next scheduled visit.

THON Tip
Not sure where you fall? The guided self-check in Is This More Than Morning Sickness? walks you through twelve questions and tells you what your answers suggest.

How symptoms tend to progress

HG typically begins before 9 weeks of pregnancy and often intensifies through the first trimester. For some women it eases by mid-pregnancy; for others it persists until delivery. The pattern that matters most in these early weeks is direction: symptoms that are stable can often be managed at home with your provider's guidance, while symptoms that are worsening week over week deserve prompt attention — because the earlier treatment begins, the better it works.

Watch for these turning points, each of which is a reason to update your provider: nausea becoming constant; vomiting increasing in frequency; fluids beginning to come back up; the first signs of dehydration. Each is a step on the escalation path — and each is earlier than the point at which most women are finally treated. You do not have to wait until you are severely unwell to be taken seriously.

Documenting your symptoms

This is the single most useful thing you can do this week. Care decisions in HG are driven by trends, not by single days — and a written record turns "I feel awful" into evidence your provider can act on. Women who arrive with documented symptoms are diagnosed sooner and treated sooner.

Record four things each day. It takes about two minutes, and on the days you cannot manage it, write the date and one word — a partial record still tells the truth about your week.

  • Vomiting episodes — how many, and roughly when
  • Fluids — what you managed, and whether it stayed down
  • Weight — same scale, same time of day, if you have one at home
  • Urine color — pale is the goal; dark is a warning
THON Tip
Start tonight with the Daily Symptom Tracker — two weeks on a single page, designed to hand directly to your provider.

Preparing for your first appointment

You may have only ten or fifteen minutes, and you may not be at your sharpest. Preparation is what protects you — write things down in advance so that on the day you can simply read from the page.

  • Bring your record. Days, episodes, weight change, and what you have been unable to keep down.
  • Lead with function, not feeling. "I have lost six pounds and cannot keep water down" lands differently than "I feel terrible."
  • Bring someone if you can. Another person in the room changes how the conversation goes, and remembers what you will not.
  • Ask your questions early. Not at the end, when time has run out.
  • Leave with a plan. What to try, when to call, and what happens if it gets worse tonight.

Recognizing dehydration — when to call, when to go

Dehydration is what turns HG from exhausting into dangerous, and it develops faster than most people expect. It is also measurable, which means it can be caught early. Learn these two lists now, while you are able to read them calmly.

Call your provider today
·Vomiting more than three or four times a day
·Urine noticeably darker, or urinating less than usual
·Losing weight, or unable to eat for more than a day
·Current medication no longer helping
Seek emergency care without delay
No fluids kept down for 12 hours · no urination, or very dark urine · dizziness, fainting, or confusion · a racing heart at rest · severe abdominal pain · vaginal bleeding · vomiting blood. You do not need permission, and you do not need to wait until morning.

Intravenous fluids are normal, appropriate treatment in HG — not a failure and not an overreaction. Going early is almost always better than going late.

If you feel dismissed

Many women with HG are told for weeks that what they are experiencing is normal. If that happens to you, it is not a reason to doubt yourself — it is a reason to be more specific, and if necessary, to ask someone else.

  • Return to the numbers. Weight lost, days without keeping fluids down, episodes per day.
  • Name the condition. "Could this be Hyperemesis Gravidarum rather than morning sickness?"
  • Ask for the plan in writing. Including what to do if you get worse, and who to call after hours.
  • Ask what would change the assessment. "What would you need to see for this to be treated differently?"
  • Seek another opinion. Asking for a second view is not disloyal. It is your right.
THON Takeaway
You do not need to be certain you have HG in order to act. Document what is happening, contact your provider sooner than feels necessary, and keep asking until someone takes it seriously. Early treatment is easier treatment.
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

Receiving 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.
02
Conversation starter
What can we start now to control the nausea and vomiting, and what is our next step if it does not work?
Why this matters

Treatment in HG is stepped, and early intervention changes outcomes. Asking about the next step now means you will not have to start the conversation over when the first approach stops working.

Continue your journey
Depending on your discussion with your healthcare provider, these resources may be helpful.
03
Conversation starter
What symptoms mean I should call you, and which mean I should go straight 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.
04
Conversation starter
How will we monitor my weight and hydration between now and my next visit?
Why this matters

Care decisions in HG follow trends rather than single days. Agreeing on what gets measured, and how often, is what allows treatment to escalate before you become severely unwell.

Continue your journey
Depending on your discussion with your healthcare provider, these resources may be helpful.
05
Conversation starter
Can you document this for my employer, and what should I tell them about time off?
Why this matters

Written documentation is what turns a request for workplace adjustments into an arrangement that holds. One proportionate note usually covers the whole pregnancy.

Continue your journey
Depending on your discussion with your healthcare provider, these resources may be helpful.
Print all questions for your appointment → Provider Visit Planner
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
Recognize
Symptom self-assessment
Appointment
Questions for My OB Appointment
Appointment
Provider Visit Planner
Safety
Emergency Symptoms Checklist
Prepare
Hospital Visit Checklist
Partner
How to Help Someone with HG
See every resource in the HG Toolkit Library™ →
Related resources
What to read next.
Is This More Than Morning Sickness?A guided self-check — twelve questions, and what your answers suggest.→ Learn About Hyperemesis GravidarumThe condition in full — science, diagnosis, treatment, recovery.→ Where are you on your journey?Eight stages, each with a tailored set of next steps.→ The HG Knowledge Center™Treatment, nutrition, hydration, and daily survival in depth.→ The Partner Journey™For the person who is worried about you.→
What you can do today
You do not have to be certain. You only have to start.
Choose one and finish it before you close this page. Each takes only a few minutes, and each makes your next appointment more useful.
Start tracking tonightTwo minutes a day. Numbers are harder to dismiss than descriptions.→ Call your providerReport symptoms sooner than feels necessary. Early treatment is easier.→ Take the guided self-checkTwelve questions, and what your answers suggest.→ Learn the signs that mean go nowNo fluids for 12 hours, dark urine, dizziness, racing heart.→ Write your questions down in advanceSo you can read from the page on the day.→ Tell one person the truthThen give them a guide, so they know how to help.→
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.