Does Heart rate really determine sex

[NightSkyWanderer]

Baby's heart was 143.
I'm convinced It's a little boy , and think I may have saw something, although could have been something else. I'm 21 weeks and were saving the reveal.
I've read anything above 140 means a girl. Would like to hear your experiences if you think the rate is true or just nonsense
143 is kinda close to either.
This is just for a bit of fun

Old's wives tale I'm afraid. My midwife told me about and when listening for heartbeat for the first time and we had a chuckle

No not at all , baby’s HR fluctuates through out the date .decreases when it’s asleep and increases when it’s active

Nope, my girl was conwiten below 140 through the whole pregnancy.

Nah, my daughter's was 154 so we thought my sister's baby at 160 would definitely be a girl. He's a little boy

Of course not