Ds2 is nearly one and gets really sweaty when he breast feeds - I don't mean slightly sweaty on his head, I mean dripping with soaking wet hair. It's been troubling me for a whole now so I googled it and an now freaking out as apparently it can be a sign of a heart problem as it can show the baby is having to work really hard when sucking. Ds2 has none of the other signs though - he's not under weight, not blue tinged at all but I did pick him up once recently and felt his little heart racing away which I thought was a bit odd.
I'll probably take him to the doctor just to be on the safe side but I just wanted reassurance - if he had a heart problem would it not have been picked up at birth or shortly afterwards?