Week 3 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 poppy seed
0.1 inches · less than 1 oz
Baby this week
- •Blastocyst is implanting into the uterine lining
- •Cell division is rapidly occurring
- •Placenta and amniotic sac are beginning to form
You this week
- •Possible mild cramping or spotting as implantation occurs
- •Tender or swollen breasts
- •Fatigue and increased need for sleep
- •Mild nausea or food aversions may begin
This week's tips
- •Continue taking prenatal vitamins with folic acid daily
- •Avoid alcohol, smoking, and recreational drugs
- •Stay hydrated and get adequate rest when possible
- •Eat balanced meals with plenty of protein and leafy greens
Informational only — always check with your doctor or midwife for advice specific to you and your baby.
Looking ahead
Next week, you may be able to detect pregnancy with a home test as hCG levels rise. Your first prenatal appointment is likely still a few weeks away, but this is a good time to schedule it if you haven't already.
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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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