s what i found
Heartbeats
One belief that has been around for some time, and even had some acceptance in the medical community
at one point, is that the
fetal heartbeat differs for boys and girls. If you're having a girl, then the fetal heart rate will be above 140. A boy will have a heart rate below 140. However, that pesky science has reared its little head again to say that this is complete fiction.