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Morning sickness: when pregnancy nausea won’t let up

For anyone who is pregnant and feels sick, some of the day or all of it, and for the people looking after them. This page passes on, by name, what the Office on Women’s Health (OWH), NICHD, the CDC, the National Library of Medicine and three other government sources say: what morning sickness is and when it eases, what the pages say about the baby, what to eat and drink, what else to try, the severe form called hyperemesis gravidarum, the signs that mean you should call, and what treatment is like. It builds the questions to ask at a visit. Take only what you need today.

An upset stomach, and not sure this is the right page? The pages on this site for throwing up, diarrhea, heartburn and constipation, on one list.

This page and its wording were written with AI (Claude) for Scarlet Beast (our AI policy). No doctor, nurse, midwife or dietitian has reviewed it. Changed on October 10, 2026. When this guide was first published, on October 9, 2026, most of its lines came from three articles of the MedlinePlus Medical Encyclopedia. That text is licensed from a company, and its notice does not allow it to be reused this way, including by AI. We had decided not to lean on it and then did; that was our mistake. Every line that came from those articles is gone, and each part of the guide has a dated note saying what went. The facts here were read on October 10, 2026, in English unless we say otherwise. On womenshealth.gov, from the Office on Women’s Health: Body changes and discomforts, Stages of pregnancy, Twins, triplets, and other multiples, and Staying healthy and safe (each updated September 26, 2025), and Pregnancy complications (updated March 4, 2026). On nichd.nih.gov: What are some common complications of pregnancy? (reviewed May 29, 2024). On cdc.gov: Urgent Maternal Warning Signs and Symptoms, from the Hear Her campaign (updated May 15, 2024), read in English and in Spanish. The Summary of the National Library of Medicine’s own topic page on nausea and vomiting, read in English and in Spanish; it is about nausea and vomiting from any cause, and we say so wherever we pass it on. On ods.od.nih.gov, from the NIH Office of Dietary Supplements: Vitamin B6, Fact Sheet for Consumers (updated June 16, 2023). On nccih.nih.gov: Ginger (updated February 2025). On fda.gov: Medicine and Pregnancy (current as of February 3, 2025). The page says whose words it is passing on, and what is marked “ours” is our own. The sources write about “women” and “moms”, and where we pass on their words we keep them. What is gone with nothing in its place: whether morning sickness affects the baby; the week it starts; how many people vomit; the hormone GDF15; the tips for taking a prenatal vitamin another way; acupressure wrist bands and acupuncture; the amount of vitamin B6; the numbers for vomiting per day, hours without fluids and pounds lost that meant a call; who the severe form is more likely for; and what a provider asks and tests at a visit. What we left out or did not read: the name, label, dose and side effects of any medicine or supplement; the daily upper limits for vitamin B6 that the Office of Dietary Supplements gives (the guide gives no amount); NICHD’s Spanish page and the Spanish fact sheet on vitamin B6 (the server would not give it to us); professional guidelines for doctors; what any visit, medicine, vitamin or hospital stay costs; and the hotline’s own pages (what we say about the National Maternal Mental Health Hotline is what the National Institute of Mental Health says, read for our postpartum depression guide). We called no number. It saves nothing and loads no tracking.