My Dr has requested I get an HSG done... anything I need to know about this or could anyone explain exactly what this is or how this can help. I already have had 2 internal ultrasounds done and they have both come back with good results... February will be 3 years ttc baby number 2 with no luck. Fertility specialist says I'm ovulating every month so she won't prescribe me anything to help... I'm just so lost and don't know where to go or ask for from here.