HG Quick Reference Guide

The most important facts about Hyperemesis Gravidarum on a single page — for your refrigerator, your bag, and anyone who needs to understand quickly.

For: Women, families & anyone supporting herTime: 3 minutes to readCompanion to: Learn About HG

Key symptoms

Severe, persistent nausea — not just mornings

Frequent vomiting, often many times a day

Unable to keep food or fluids down

Weight loss (5%+ of pre-pregnancy weight)

Signs of dehydration; dark or scarce urine

Excessive saliva (ptyalism)

Extreme sensitivity to smells and motion

Deep fatigue; unable to function normally

Common risk factors

HG in a previous pregnancy · A mother or sister who had HG · Twins or multiples · History of severe motion sickness or migraines · Molar pregnancy (uncommon; screened by ultrasound). HG can occur without any of these — and none of them are her fault.

The science in one sentence

HG is a biological condition — driven substantially by the placental hormone GDF15 and by genetics — not by stress, attitude, or anything she did.

Call the provider today

Vomiting several times a day and struggling to keep fluids down · Losing weight · Urinating less, or dark urine · Dizziness or weakness · Unable to work or care for herself · The current plan is no longer working

Emergency — go now or call 911

No fluids kept down for 12–24 hours · No urination for 8+ hours · Fainting · Racing heart · Blood in vomit · Severe abdominal pain · Vaginal bleeding · Fever · Confusion. Thoughts of self-harm: call or text 988.

Five questions for the provider

"Could this be Hyperemesis Gravidarum rather than morning sickness?"

"What do we start with — and what is the next step if it does not work?"

"At what point should I come in for IV fluids?"

"Who do I contact after hours?"

"Can you document my condition for work or time off?"

Notes

Part of the THON Companion Series™ · Evidence-informed · Last reviewed July 2026 · Next review January 2027
This resource is educational and does not replace the advice, diagnosis, or treatment of your physician or another qualified healthcare professional. If you cannot keep fluids down, feel faint, or believe you are experiencing an emergency, contact your provider or seek emergency care. © 2026 The House of Nirvana · thehouseofnirvana.org · info@thehouseofnirvana.org · You are not alone.