My 2 1/2 year old boy has just recently begun seriously potty training. He has been doing great with pee and hasn't had an accident in weeks, and gives really obvious signals when he has to poop (really nervous whiny sounds and says "mama" alot). He has pooped three times now on the potty but cried almost the entire time from when he started to when I took him off the toilet (even after all the poop came out). He hasn't been crying when he poops in his undies, so I don't think it's painful to go... and the poop looks normal. Actually, while he's pooping, he sounds like me in labor... it seems unusual. Is this normal? Should we not let him sit on the toilet right now when he has to poop? As soon as I take him off the toilet he's perfectly fine and wants to run and tell everyone he just pooped on the potty.