They also say if it's in the 150 rang it could be a boy but that's not till like 12 weeks
@ 7 weeks and 6 days mine was 168 :)
I'm 7weeks and my baby's was 122 :) I think they get a bit faster as they get bigger until they are so far..
I'm 19 weeks and 3 days but when I was 12 weeks my babies heart beat was 160 then I went at 17 weeks and the heart rate was 150 but if it wasn't good then your doctor would tell you something was wrong