I have my latest two babies a boy and a girl, they just turned 5 months. I have another two of my girls in heat. Is it possible for him to impregnate them? I am having him neutered in a month. I asked my vet and he said there is a possibility that he can do it. He has mounted them but just the action. Please help! I have them separate and have them wear the panties but not all day. thanks.