Mine was 150 and i am having a boy. The heart rate doesnt say much regarding gender because tge baby being active can raise it as well as other factors. It's fun to wonder though.
1st boy 178
2nd boy 145
Baby girl 152
So I don't believe in it... Lol
My bbys was 140 or 145 and it came out to be a girl
Mine was 172 at first ultrasound. Having a girl.
All other old wives tales were also correct when I did them at 18 weeks.
mine was like 162 my first ultra sound and the nurse said your having a girl!
She was right :)