When Will Your Doctor Know Your Baby’s Gender






VN:F [1.9.16_1159]
Rating: 5.0/5 (1 vote cast)

One of the most exciting things about being pregnant is finding out your baby’s gender. Most moms start the guessing game right away, trying to figure out if they are carrying a baby boy or a baby girl.

There are tons of old wives tales out there that can be a fun way to pass the time and can help to answer the pink or blue question. However, when will your doctor be able to tell you your baby’s gender? Read on to find out.

1. The Big Reveal

For most pregnant women, the big reveal comes at their mid-pregnancy ultrasound. Most women have an ultrasound somewhere between weeks 16-20 of their pregnancy.


This is usually the time that an ultrasound technician can determine whether or not a baby is a boy or a girl, depending on the baby’s position during the procedure. If the baby is in an awkward position however, and the technician does not have a clear view of the baby’s genitals, it may not be possible to find out a baby’s sex until later ultrasounds are done.

2. Earlier?

It can be very difficult to tell a girl baby from a boy baby anytime prior to 14 weeks gestation. This is because the penis or vulva, which begin to develop at six weeks gestation, are simply not visible on an ultrasound at this point.


While 14 weeks is considered the minimum for gender determination, it is often very difficult to distinguish boy babies from girl babies for many weeks after this. By 18 weeks or so, it is usually quite apparent if a baby is male or female.

3. Other Tests

While the majority of couples who find out the sex of their baby find out through ultrasound, there are other tests that can do the job as well. Tests like amniocentesis or CVS can both determine a baby’s gender, but they are not without risk, as there is a small chance they could cause a miscarriage.


Not everyone gets these tests, but for those who do, CVS is typically done between 11 and 12 weeks and amniocentesis between 16 and 22 weeks. If you get one of these tests, the results will show whether you’re having a boy or a girl.

4. The Bottom Line

The truth of the matter is, although it is very exciting to find out if your baby is a boy or a girl, the longer you wait for your ultrasound, the more accurate your results will be. Having an ultrasound to determine gender before 18 weeks is usually a bad idea, since it will probably not work.


Also, beware of “boutique” ultrasound clinics which claim to be able to tell you your baby’s gender sooner, for much more money. Chances are, they are using the same machines as your doctor, and they can not tell your baby’s gender any sooner.

When Will Your Doctor Know Your Baby's Gender, 5.0 out of 5 based on 1 rating

Dr. Karen Leham, MD

Dr. Karen Leham is double board-certified in Obstetrics and Gynecology and in Reproductive Endocronology and Infertility. Dr. Leham completed her residency at Loyola University, followed by a fellowship at UCLA.