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Gender Predictor - How To Tell If You Are Having a Baby Boy or a Girl?

Updated on January 21, 2019
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This author is a mum of two beautiful, cupcake-loving daughters, figuring out parenting (and baking) one day at a time!

Are You Having A Baby Boy or Girl?

How to find out whether you are having a baby boy or a baby girl..

Are you pregnant, or is someone you know pregnant? Congratulations!

On this page I will explain all of the methods of gender prediction for working out whether you are having a baby boy or a girl. These methods range from the scientific with 100% accuracy, to the fun old wives tales that may be little better than guesses. For each method listed I will explain how it works and talk about it's accuracy. I also mention home Gender Prediction Tests

Please try out these methods for yourself and let me know via the various comments boxes which ones work for you.

How to tell if you're having a baby girl or baby boy. My beautiful baby niece!
How to tell if you're having a baby girl or baby boy. My beautiful baby niece!

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Science - Ultrasound Test To Find Out The Sex Of Your Baby

Ultrasound is a reliable and scientific method of finding out the sex of your baby. During an ultrasound examination, the sonographer will squeeze a small amount of jelly onto your stomach and then run the probe backwards and forwards over your bump, looking at the images. Usually, the sonographer will be checking on the health and development of your growing baby, but ultrasounds can also be performed that are just to determine the sex of your child.

Ultrasounds are usually performed at around 20 weeks for sex determination as they may be too unreliable before this time. Having said this I was told by a sonographer at my twelve week scan that my baby was 90% likely to be a girl, and she was right!

Whenever an ultrasound is performed in pregnancy it can be wrong, so do not accept it as gospel truth. Usually, pregnancy ultrasounds are correct, but they do not have a 100% success rate as they rely on the position of the baby and the skill of the sonographer..

© Nevit Dilmen [CC BY-SA 3.0 ( or GFDL (]
© Nevit Dilmen [CC BY-SA 3.0 ( or GFDL (]

Science - Amniocentesis and CVS

Amniocentesis and CVS are tests that are done on your baby before birth to determine whether there are any genetic problems. These tests are not carried out routinely as they do come with a small amount of risk and are usually only performed where the baby is at higher than normal risk for genetic problems.

Amniocentesis is done by inserting a small needle through the belly and into the womb, where a sample of amniotic fluid is collected. Usually you have to rest on the day that this test is done but can resume normal activities the next day. Amniocentesis is usually performed at or after 15 weeks of pregnancy. Both Amniocentesis and CVS carry a risk, albeit a small one, of miscarriage.

CVS is done earlier in the pregnancy and is done by inserting a small needle or catheter through the cervix. This is then used to remove a sample of the placenta in the womb. Some women have a little bleeding after this procedure.

One of the results of these tests is that as well as finding out results about the health and wellbeing of your baby you can also find out with 100% accuracy, the sex of the baby you are carrying. However, due to the slight risks involved in these tests, they are not usually carried out for gender selection alone.

Science - Home Gender Predictor Tests

Recently, several products have become available on the market that claim to tell you the sex of your baby. Having read lots of reviews about them I found that the one that has the consistently best feedback from women who used it whilst pregnant, and then reported back about its accuracy, was the test known as the Sneakpeek Early Gender Prediction DNA Test. This test uses DNA testing to determine the sex of your baby and they claim 90% accuracy. You simply collect a sample of blood at home using the kit provided and send it off to them. They email you the results to tell you the sex of your baby.

Old Wives Tales - The Wedding Ring Trick

How it works:

Tie your wedding ring to a piece of your hair or a piece of fine cotton.

Lie down comfortably and dangle the ring over your growing bump.

The old wives' tale says that if it moves in circles you are having a boy, if it moves side to side you are having a girl!

Old Wives Tale - Hairy Legs...

One question that forms the basis of an old wives tale is how fast the hair on your legs has been growing during pregnancy. According to legend if the hair on your legs grows quickly during pregnancy then you are expecting a boy, if it grows more slowly than usual you are expecting a girl.

Presumably this old tale is based on the hormone levels within the body during pregnancy and the assumption that more female hormones should make you less hairy. Sadly, I could find no scientific evidence to back up this theory.

Old Wives Tale - Carrying High Or Low

Some people claim to be able to tell just by looking at your bump whether you are expecting a boy or a girl baby.

According to this particular theory, if you are carrying your baby high on your body, it's a girl, if you are carrying low it's a boy.

Of course, the truth is that there is absolutely no scientific evidence to back up this old wives tale, sadly. Instead, the way you carry is more to do with your own body shape and how your own muscles are supporting the baby.

Old Wives Tale - Linea Nigra

The linea nigra is a line that appears on some womens bellies during pregnancy. It is a dark line, about one centimetre wide that runs down the middle of the pregnant belly. Apparently it appears due to the changing hormones associated with pregnancy.

According to the old wives tale this line can be used to determine whether you are having a boy or a girl. If the line goes all the way from the pubic area up to your belly button and stops there then you pregnant with a baby girl. If however it continues above the belly button and up to below the ribs then you are having a boy.

Again, I could find no scientific evidence available that claimed this to be true, and in fact, many people don't develop a linea nigra at all!

Old Wives Tale - Where Is Your Baby Weight?

Some people claim to be able to tell whether you are carrying a boy or a girl according to where you are carrying any additional weight. (if, of course, you are carrying any).

People claim that if you are carrying weight on the front of your body then you are carrying a boy, whereas women who carry their weight behind (i.e. on their hips and butt) are carrying a girl.

Again, no verifiable scientific evidence exists to back this theory up!


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