Week 12 of Pregnancy
First trimester
For informational purposes only. This page is not medical advice. Every pregnancy is different — always consult your doctor, midwife, or healthcare provider for guidance specific to your situation. In an emergency, call your provider or 911 immediately.
Baby is
about the size of a plum
2.1 inches · 0.5 oz
Baby this week
- •Fingernails and toenails are forming
- •Baby can make a fist and move fingers
- •Reflexes are developing - baby may hiccup
- •Hair follicles and sweat glands are forming
- •Tooth buds are developing under the gums
You this week
- •Nausea may be starting to ease for some
- •Fatigue continues but energy may begin improving
- •Breast tenderness and enlargement
- •Possible increased appetite as nausea subsides
- •Mild cramping or pelvic discomfort
- •Occasional dizzy spells from blood pressure changes
This week's tips
- •Schedule your first trimester screening or nuchal translucency ultrasound if recommended by your provider
- •Start a prenatal vitamin routine if you haven't already - focus on folic acid and iron
- •Stay hydrated and eat small, frequent meals to manage any remaining nausea
- •Wear supportive, comfortable bras as breast changes continue
- •Begin gentle pregnancy-safe exercise like walking or prenatal yoga to boost energy
Informational only — always check with your doctor or midwife for advice specific to you and your baby.
Looking ahead
Week 12 marks the end of your first trimester - a significant milestone! You're moving into the second trimester next week, when many people experience a boost in energy and the risk of miscarriage drops significantly. This is often when you might start sharing your pregnancy news more widely.
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For informational purposes only. This page is not medical advice. Every pregnancy is different — always consult your doctor, midwife, or healthcare provider for guidance specific to your situation. In an emergency, call your provider or 911 immediately.
This content is for informational purposes only and is not medical advice. Every pregnancy and baby is different. Always consult your doctor, midwife, or pediatrician for guidance specific to your situation.
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