Is he still in a denial stage on you r pregnant? Maybe still can accept the fact yet?
Is he like that before you r pregnant? If he's nice, doesn't treat you this way maybe he still trying to accept the fact that you r pregnant. Did you guys talk or fight about this 3rd child? Got any agreement that both of you r ok with this no 3?
Hugz!! If possible, talk to your family also.. They will be there no matter what