Baby heart rate gender

Hi guys

Not sure where to post this but I’m currently 38 weeks and don’t know the gender of my baby. But still like to speculate lol!

Just wondering have you guys found a pattern in babies heart rate during pregnancy that linked to gender? I’ve read that over 140 bpm means girl and under is boy. Has this been accurate for anyone?!

My baby’s heart rate is always on or just above 140 so I don’t think this theory is going to be helpful for me but I am curious!

Thanks