Can someone help calm my nerves

I am 14weeks pregnant. The man that i conceived this baby with is not my s/o or someone I'd like to continue having a relationship with. Given that i do understand that i am obligated to co-parent with him. However, when we were together we would fight. We didnt get the "honey moon" faze at all. We were good friends for a second though before it turned to just sex. Anyway since ive been pregnant all we do is fight and have screaming matches. It's has been bad enough to where i thought i might miscarry because how upset i was along with the cramps and heart palpitations. Moving forward to just two days ago. We had a scream match all I came to ask is what he was going to do for the baby if I just gave it to him. (Really dont want to parent with him) I was concerned because i know he has no relatives in state and both his parents are deceased. There is no one to help take care of a baby or pay bills. And obviously as a mother to this child i do want the best. He just calls me a bitch and says thats what i think but if i really felt in my heart he could do it i would have given him the kid but he wont even talk civil to me about the subject. Anyway since this last screaming match i cry if there is any sign there might be conflict. I also get anxiety and shake like a scared Chihuahua if i think he's someone how going to come face to face with me. I really don't want to see him and get really really fucking nervous when he's around. I want to cry if i have to say anything to him. Also my doctors appointment to find out the gender and see the baby is coming soon. He is very adamant about going since he missed the first one. I don't know how im supposed to do it. I dont know how i can sit with him for this or let alone take a car ride with this man. It gives me anxiety and my spine shivers just thinking about it. I don't get it nor do i know what to do about. Is there any advice someone could give me?