How do I know if I’m having a Boy or a Girl?

There are parents that decide to wait until their baby is born to find out the gender; but some others want to know as soon as they know they’re expecting (like myself!). There are scientific ways to find out the baby’s gender that are as high as a 100% accurate. Of course there are also some not so scientific methods that are good to have fun with and see if they actually work. Old wife’s tales have a 50-50 accuracy, but some people swear by them.

High-tech methods

1. NIPT (Noninvasive Prenatal Testing)

  • When: as early as 9 weeks
  • Accuracy: more than 99%
  • Invasive: no, it’s done through a blood work
  • Note: this test is targeted to check the risk of any chromosomal abnormality, such as trisomy 21 (Down syndrome), trisomy 18 (Edwards syndrome) and trisomy 13 (Patau syndrome). If you want to know your baby’s gender, you need to talk to your doctor prior to the test, so they request to check for the X or Y (the gender).

2. CVS and Amnio (Chorionic Villus Sampling & Amniocentesis) 

  • When? Between 10 and 13 weeks for CVS and 16 and 18 for amnio
  • Accuracy: 100%
  • Invasive: yes! Which slightly elevate your chance of miscarriage
  • Note: This test is to check the baby’s genetic makeup and screen for chromosomal abnormalities. As it’s an invasive test, this is not the test to choose if you just want to know the gender of your baby. There have to be a reason of concern to actually perform this test.

3. Ultrasound

  • When? Between weeks 18 and 22
  • Accuracy: around 99%
  • Invasive? Nope
  • Note: make sure you tell the ultrasound practitioner you do want to know your baby’s gender ahead of time. You might want to keep it a mistery and find out by mistake

Baby-gender prediction kits

If you’re not getting any of the tests I mentioned before, this is a good option. They test male hormones in either your pee or blood. The only problem? They’re not very accurate and they can cost $40 or more. So, it really depends on you, since you’ll have to also confirm with your doctor later on.

Low-tech Methods

If you want to have fun experimenting with some old wife’s tales, you can. They usually don’t cost anything and are non invasive. Again, they have a 50/50 chance of accuracy, but I guess it’s not bad if you confirm later on with your doctor. Please don’t buy baby clothes or paint the nursery based on these results thought!

Chinese Birth Calendar
  • Where your carrying. If your belly is pointy and low, you’re having a boy; if your belly is round and high, it’s a girl! *For me, it’s a girl*
  • Position of the lines nigra. This is the vertical line of pigmentation on your belly. If it runs only up to your belly bottom, you’re having a girl; if it goes past your belly button, it’s a boy. *I still don’t have one, so it doesn’t apply yet*
  • Fetal heart rate. If the baby’s heart rate is lower than 140 bpm, you’re having a boy; if it’s higher than 140 bpm it’s a girl (On my last ultrasound it was exactly 140bpm). *On our last appointment, my baby’s heart rate was exactly 140bpm, so I can’t guess anything based on this*
  • The ring test. You can use a wedding ring (or any other ring) and attach it to a thread or chain. Someone has to help you by holding the dangling ring over your belly, while you lie down. You can also place it over your open palm. If it swings in a circular motion, you’re having a girl. If it moves back and forth, it’s a boy. *This is how you do it, for me it was a girl*
  • Chinese birth calendar. It predicts your baby’s gender based on you age and the month when it was conceived. Some people believe it’s witchcraft because it’s so accurate, some others don’t. There are many kinds of Chinese birth calendar, some are very simple, but the one I’ve posted is more accurate. *According to it, I’m having a girl*
Sour cravings
  • Baking soda test. You basically have 2 cups, one with baking soda, the other one with your first pee in the morning. Both should be in equal amounts. You need to pour your pee in the baking soda and wait for the reaction. If it zizzles like beer it’s a boy; if nothing happens it’s a girl. *Here you can see how my test went, according to it I’m having a boy*
  • Cravings. It’s you’re craving sweets, you’re having a girl; if you’re craving salty food, it’s a boy. *This is what I’ve been craving the most, sweets and citruses, so, a girl?*
  • Hair and skin. If you’re having oily skin and dull hair, it’s a girl; while lustrous hair and skin means it’s a boy. *For us, a girl*
  • Morning sickness. Apparently, when you have it, you’re carrying a girl; if your pregnancy goes by smoothly, it’s a boy. *Again, a girl*

The Takeaway

So go ahead and enjoy the guessing game. Whether you end up going with a high-tech method to predict your baby’s sex, an old wives’ tale, or you find out the old-fashioned way in the delivery room, you’ll fall in love with that baby in your arms no matter what.

According to all these old wife’s tales, there’s only one that says I would be having a boy, all the other ones say it’s a girl. I’m going to find out on December 30th, until then, I just need to be a little more patient.

Please let me know if you’ve ever used any of these methods and if they actually worked. Above all, cheers to healthy and happy babies!



I am a mom. I love running, cycling, photography, reading, painting, meditating and essential oils. If I can inspire just one soul, I'll be happy

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