Week 13 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 peach
2.9 inches · 0.81 oz
Baby this week
- •Fingerprints are forming on fingertips and toes
- •Baby can bend fingers and make a fist
- •Vocal cords are developing (though you won't hear anything yet)
- •Intestines are moving into the small intestine chamber
- •Baby is becoming more proportionate as the head grows slower relative to the body
You this week
- •Morning sickness may be starting to ease for many
- •Continued breast tenderness and soreness
- •Possible darkening of the areolas
- •Increased appetite as nausea subsides
- •Occasional dizziness or lightheadedness
- •Heightened sense of smell
- •Lower abdominal aches or round ligament pain
This week's tips
- •Consider scheduling your second trimester ultrasound (typically between weeks 15-20) if you haven't already
- •Start thinking about when to share your pregnancy news at work—timing is personal, but many wait until after the second trimester ultrasound
- •Switch to maternity pants if you're finding regular waistbands uncomfortable; comfort matters more than staying in regular clothes
- •Stay hydrated and eat small, frequent meals to manage any remaining nausea and support increased energy needs
- •Begin a prenatal exercise routine like walking, swimming, or prenatal yoga if your provider has cleared you—it can help with energy and prepare your body for labor
Informational only — always check with your doctor or midwife for advice specific to you and your baby.
Looking ahead
Welcome to the second trimester! This is often called the 'golden period' of pregnancy—many people experience a surge in energy and reduced nausea over the coming weeks. Your next big milestone will be the anatomy scan ultrasound, where you'll get detailed views of your baby's development.
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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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