augbaby, my ger had the pimple on her buttock when she was 3weeks old, my mom tot it was bitten by red ant! haha...
but i called my PD, and he advised me to keep it clean, and do not apply anything on it, and it's not painful at all..
but my ger has a lump at her left hip bone, up above her thigh.. u check your boy, he shld hv it too. make sure the lump is not too big, or u shld be concerned ok..
my ger still has the lump.. i will ask my PD when the lump will disappear..
u check your boy too la, coz PD said if BCG is given on left buttock, then it will be left hip..
if u noe anything more, sms me hor! thanks! =P