13 Weeks Pregnant: What to Expect

At 13 weeks pregnant, your baby is the size of a peach. Learn about your baby's development, common symptoms, and helpful tips for this stage of pregnancy.

Week 13 Snapshot: 🍑 Baby is the size of a peach — 2.91 inches, Less than 1 oz
Week 13 of 40
Trimester First Trimester
Baby Size 🍑 Peach
Baby Weight Less than 1 oz
Weeks Left 27 weeks
Progress 33%
Pregnancy Progress: 33% complete
T1 T2 T3
Week 13 189 days to go

Baby Development at Week 13

Key milestones and developments happening this week:

Common Symptoms at 13 Weeks

You may experience some or all of these symptoms during week 13:

Tips for Week 13

Nearby Weeks Comparison

See how your baby grows in the weeks around week 13:

Week Baby Size Length Weight Trimester
Week 9 Cherry 0.9 in Less than 1 oz First Trimester
Week 10 Strawberry 1.22 in Less than 1 oz First Trimester
Week 11 Fig 1.61 in Less than 1 oz First Trimester
Week 12 Lime 2.1 in Less than 1 oz First Trimester
Week 14 Lemon 3.42 in 1.5 oz Second Trimester
Week 16 Avocado 4.57 in 3.5 oz Second Trimester
← Week 12 Week 14 →

What Happens at 13 Weeks Pregnant?

At 13 weeks pregnant, you are in the first trimester of your pregnancy. Your baby is about the size of a peach, measuring approximately 2.91 inches. This is an exciting time as your baby continues to grow and develop new capabilities each week.

During week 13, your body is working hard to support your growing baby. The placenta continues to provide essential nutrients and oxygen through the umbilical cord. Your blood volume has increased significantly to support the pregnancy, and your body is producing hormones that help maintain the pregnancy and prepare for delivery.

With 27 weeks remaining until your estimated due date, you are 33% of the way through your pregnancy. Remember that a full-term pregnancy is considered 39 to 40 weeks, but babies can arrive anywhere from 37 to 42 weeks. Only about 5% of babies are born on their exact due date, so think of your due date as an estimate rather than a deadline.

Regular prenatal care is essential throughout your pregnancy. Your healthcare provider will monitor your baby's growth, check for any complications, and help you prepare for a healthy delivery. Do not hesitate to contact your provider if you experience any concerning symptoms or have questions about your pregnancy.

Frequently Asked Questions

How big is my baby at 13 weeks pregnant?

At 13 weeks pregnant, your baby is about the size of a peach, measuring approximately 2.91 inches. The baby is still too small to measure weight accurately.

What are common symptoms at 13 weeks pregnant?

Common symptoms at 13 weeks of pregnancy include energy levels begin to increase, nausea typically decreasing, and food cravings becoming more noticeable. Every pregnancy is different, so you may experience all, some, or none of these symptoms. Contact your healthcare provider if you have concerns about any symptoms.

What trimester is 13 weeks pregnant?

At 13 weeks, you are in the first trimester (trimester 1 of 3). The first trimester spans weeks 1-13 and is when the baby's major organs begin to form.

How many weeks are left at 13 weeks pregnant?

At 13 weeks pregnant, you have 27 weeks remaining (189 days) until your estimated due date at 40 weeks. You are 33% through your pregnancy. Keep in mind that only about 5% of babies arrive on their exact due date.

Related Pregnancy Resources

← Pregnancy Week by Week | Health & Fitness Calculators