The first trimester — weeks 1 through 12 — is a whirlwind of invisible change. Here’s what to expect and how to take care of yourself while your body does its remarkable work.
Common symptoms (all normal)
Fatigue that sleep doesn’t fix, nausea (with or without vomiting), tender breasts, frequent urination, mood swings, food aversions, and a heightened sense of smell. Symptoms vary wildly between pregnancies; having few symptoms doesn’t mean anything is wrong.
Eating well when nothing sounds good
Aim for small, frequent meals. Prioritize folate (leafy greens, lentils), iron (lean meats, beans), calcium (dairy or fortified alternatives), and protein. Take your prenatal vitamin daily — folic acid is especially critical in these early weeks for your baby’s neural development. Avoid alcohol entirely, limit caffeine to about 200mg a day (roughly one 12oz coffee), and skip raw fish, unpasteurized dairy, and deli meats unless heated steaming hot.
Your checkup schedule
Most providers schedule the first prenatal visit around week 8–10: confirmation, medical history, blood work, and possibly a first ultrasound. Standard first-trimester screenings (offered around weeks 10–13) check for chromosomal conditions — your provider will explain your options without pressure. Write down questions between visits; no question is too small.
Coping with nausea
Ginger tea, small carbohydrate snacks before getting out of bed, B6 supplements (ask your doctor), acupressure wrist bands, and cold, bland foods help many women. If you can’t keep fluids down for 24 hours, contact your provider — severe nausea (hyperemesis gravidarum) is treatable.
When to call your doctor promptly
Heavy bleeding, severe abdominal pain, severe headache with vision changes, or fever over 100.4°F (38°C). Trust your instincts — providers would always rather hear from you.
Be kind to yourself this trimester. Growing a human is exhausting work, even when no one can see it yet.
This article is for informational purposes only and isn’t medical advice. If you have concerns about your baby’s health or your own, please talk to your doctor or pediatrician. See our Disclaimer.