Generally anything over 140bpm indicates a boy, but in saying that, when my MW puts the doppler on me his heartrate changes dramatically cause babies don't like dopplers much.

There have been studies done into whether there is any relation between heartrate and gender and the general consensus is no, there is no relation between gender and heart rate.

None of the old wives tales are set in stone either, there is the odd few that conform to the tales, but I would say most babies don't.

Lou - I think it's girls all out front, boys spread out. But then my boy goes out front and round my sides. LOL

Bubie - I'm afraid you're probably going to have to wait for the 20 week scan like everyone else. And unfortunately, even that isn't a gaurantee.

On your 12 week scan they should have been able to pick up the heart beat, I know this is an old wives tale but it goes something like this, 145bpm or less is more likely to be a boy and 145bpm or more likely to be a girl.

 At the 12 week scan my bub had a pulse rate of 151 (meaning girl) at the 20 week scan it was confirmed. Upon talking with my sister (she has 2 girls) both her kids showed pulse rates higer than 145bpm, I don't know how reliable the heart beat method is but there could be something in it...  Stange thing is  I knew long before I had any scans that It was having a girl, I had a different way of working things out.