I'm sure there are loads of threads on this but I can't work out how to look alphabetically!
Anyway, is there any truth in consistently slower heart rate more likely to be boy and consistently faster heart rate more likely to be girl? I read in quite a scientific book about pregnancy that it is 70% reliable in determining the sex but was wondering whether personal experiences of mumsnetters proved this or not.
My midwife thinks there is some truth in it but I'm not so sure!