Week 10 of Pregnancy
Learn about your baby's development and what to expect at 10 weeks pregnant.
Baby's Size This Week
Baby Development at Week 10
- ● Your baby is about 3.1 cm from crown to rump and weighs around 4g — roughly the size of a prune.
- ● All vital organs are formed and beginning to work together, marking the official end of the embryonic period.
- ● Fingers and toes are fully separated, and tiny fingernails are starting to develop at the tips.
- ● The brain is producing about 250,000 new neurons per minute during this remarkable rapid growth phase.
- ● External genitalia are beginning to develop, though it is too early to determine sex reliably by ultrasound.
- ● Your baby can make small but purposeful movements including swallowing, kicking, and waving arms, though none are felt yet.
Your Body at Week 10
- ● Morning sickness may begin to ease for some women as the first trimester nears its end and hCG levels plateau.
- ● Your blood volume has increased by about 25% and will eventually increase by 40-50% by late pregnancy.
- ● Visible veins may appear on your breasts and abdomen due to significantly increased blood flow beneath the skin.
- ● Round ligament stretching may cause occasional sharp pains in the lower abdomen as the uterus expands.
- ● Headaches are common due to increased blood volume, hormonal changes, and possible dehydration.
- ● Your metabolism is increasing noticeably, which may cause you to feel warmer than usual and sweat more.
Week 10 Checklist
- ☐ Schedule or complete first-trimester screening (nuchal translucency, NIPT) between weeks 10-13.
- ☐ Continue taking your prenatal vitamin with folic acid every day without fail.
- ☐ Invest in comfortable maternity bras and clothing as your body continues changing shape.
- ☐ Stay hydrated — dehydration can worsen headaches and morning sickness significantly.
- ☐ Talk to your dentist about a pregnancy dental checkup, as gum disease risk increases with pregnancy hormones.
- ☐ Discuss genetic screening options and their implications with your provider to make an informed decision.
Frequently Asked Questions
Can I find out my baby's gender at 10 weeks?
If you have NIPT (non-invasive prenatal testing) done, the results can reveal your baby's sex as early as 10 weeks since it analyzes fetal DNA in your blood. Ultrasound cannot reliably determine sex until around 18-20 weeks. Some newer early gender blood tests are available commercially, but their accuracy varies.
Is it normal to have headaches in the first trimester?
Yes, headaches are very common in the first trimester due to increased blood volume, hormonal changes, fatigue, stress, dehydration, and caffeine withdrawal. Acetaminophen (Tylenol) is generally considered safe during pregnancy, but avoid ibuprofen and aspirin. Stay hydrated, get adequate rest, and eat regular meals. Contact your provider if headaches are severe or accompanied by vision changes.
How much water should I drink during pregnancy?
Pregnant women should aim for about 8-12 cups (64-96 ounces) of water per day. Your blood volume is increasing significantly, and staying hydrated supports amniotic fluid production, nutrient delivery, and helps prevent constipation, UTIs, and headaches. Increase your intake if you are active or in hot weather.
Should I get a dental checkup during pregnancy?
Yes, dental care is important during pregnancy. Hormonal changes increase the risk of gum disease (pregnancy gingivitis) and tooth decay. Routine cleanings and necessary dental work are safe during pregnancy. Inform your dentist that you are pregnant, and the second trimester is often considered the ideal time for dental procedures.
What pain medications are safe during pregnancy?
Acetaminophen (Tylenol) is generally considered the safest over-the-counter pain reliever during pregnancy and can be used for headaches, back pain, and fever. Ibuprofen (Advil, Motrin) and aspirin should be avoided, especially in the first trimester and after week 20, as they can affect fetal kidney function and close the ductus arteriosus prematurely. Always consult your provider before taking any medication.
Track Your Exact Pregnancy Week
Use our free Pregnancy Week Tracker to find out exactly how far along you are based on your last menstrual period or due date.
Track My Pregnancy →Sources
- ACOG
- WHO Fetal Growth Charts
- Mayo Clinic
Medical disclaimer: This content is for informational purposes only and is not intended as medical advice. Always consult a qualified healthcare provider for guidance specific to your pregnancy.