Week 10 · 1st trimester

Pregnancy Week 10: What to Expect

Baby's development, your body's changes, common symptoms, what to eat, and what to do this week.

Baby's size this week: Strawberry (~31 mm)

Baby's development at week 10

Baby's vital organs are formed and working in basic ways. Tooth buds appear under the gums. Tiny fingernails and toenails start growing. Baby is moving around — turning, stretching, kicking — but you still cannot feel it. The yolk sac (early nutrition source) is shrinking as the placenta takes over fully. Baby's external genitalia are continuing to differentiate, and by the end of this week, baby is recognizably human-shaped on ultrasound.

What's happening in your body

Your uterus is about the size of a large orange. You may see visible vein patterns on your chest and breasts (carrying that increased blood volume). Vaginal discharge is thicker and more abundant. The center-belly line (linea nigra) may be more visible. Your hair may feel thicker (pregnancy hormones extend the hair-growth phase, so less shedding). Some people start to notice swollen feet or hands by end of day, especially in warmer weather.

Common symptoms at week 10

Round ligament pain — sharp twinges in the lower abdomen when standing up, sneezing, or rolling over in bed. Vaginal discharge increase. Possible mood swings, weepy moments. Cravings or aversions becoming intense. Acne or pregnancy glow. Some people lose nausea this week; others still have it. Mild swelling in feet or hands. Spotting after sex (the cervix is sensitive). Vivid dreams.

When to call your provider

Heavy bleeding (more than spotting), severe one-sided pain, sharp shoulder pain, or severe headache with vision changes — call your provider. Sudden swelling in face/hands combined with headache is a preeclampsia warning, though preeclampsia rarely shows up before week 20.

How to feel better this week

If you want NIPT (non-invasive prenatal testing — a blood draw that screens for chromosomal conditions including Down syndrome and trisomies 13 and 18), this is when to schedule it. It is usually drawn between weeks 10-13 and can also tell you baby's sex if you want to know. Wear a supportive bra. Drink water; constipation worsens with dehydration. Move daily — even a 15-minute walk helps constipation, mood, and energy. Limit caffeine to under 200 mg.

Nutrition focus for week 10

Iron, folate, calcium, protein, healthy fats. Salmon (twice weekly), eggs, beans, lean meats, leafy greens, yogurt, full-fat dairy if tolerated. Healthy fats (olive oil, nuts, avocado) support baby's brain development, which is rapid now. Limit ultra-processed foods. If you are still nauseous, do not force a "perfect" diet — eat what you can and take the prenatal vitamin.

For your partner

Decide together about genetic screening (NIPT) and any further testing. Some couples want all the information; others prefer to wait for the anatomy scan. There is no wrong choice. Schedule NIPT this week if you want it.

This week's to-do

Schedule NIPT or genetic screening if you want it. Stay hydrated.

Is this normal?

Miscarriage risk drops significantly after week 10 — from ~10-15% in the first weeks to about 2-5% by the end of the first trimester. Many people start to feel safer telling more people around this time.

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Medical disclaimer: This content is for general educational purposes only and is not a substitute for medical advice. Always talk to your healthcare provider about your specific pregnancy. If you have concerning symptoms, do not wait — call your provider or go to the emergency department.