Annoyed

Am I just overreacting? Note to everyone I'm 37 weeks pregnant and have a 2yr old son and my fiance has a 8 yr old daughter. This morning I asked my fiance who was taking his child to school he said if you do it I'll do everything else to keep you of your feet (my feet are swollen and hurts if on them to long). So I took her to school and come home and my son's awake and what happens I end up changing him both his diaper and his clothes and feed him. I had a doctor's appointment today and he got up last possible min almost making me late. Then literally 10 mins ago I say I thing Cayden (my son) is hungry he says well then feed him I say you said of I took her to school you'd do everything else to keep me off my feet he say you misunderstood what I said in an attitude. So what's he do makes my son's food and hands it to me to feed him and says start feeding him and I'll be right back and hes literally in the bedroom until I'm done feeding him. The only thing he did to help me was feed him lunch while I laid in bed for a little bit