You cant determine gender based on heart rates... my little one has a heart rare of 130-140 and its a girl... even the ultrasound tech has told me that you cant predict gender based off that number... they see people have boys and girls all day long and see all different numbers
High heart rate does not mean ur having a girl.... I'm having a boy and his ranges from 150-160
High heart beat is a girl and low like 140s is boy
My first pregnancy was in the 150s and it was a boy. Now with my second it's in the 130-150 range and another boy
no idea but....i am having a girl and her heartbeat is always in the 150s my first daughter was the same way i think they say faster heartbeat girl slower its a boy