Are there solutions that we’re not seeing?

Me and my boyfriend met in high school and started dating after graduation. We were together for over a year and moved in together and was engaged but decided to break up. When we broke up we talked and decided I would get the apartment and he would get the car since I didn’t drive and he was planning on moving out of town. After a couple of days I guess resentment settled in and he refused to move. The stress hurt me badly so I went to my moms.

I ended up pregnant with someone months later and got my own house, soon after that the ex moved out of town. The baby daddy was horrible and I never allowed him to live with me. I ended up losing the baby.

When the ex heard he reached out and we reconnected and became friends, we then started dating and started to discuss the future, but I was vocal about having trust issues since he took the apartment before. A couple weeks before Christmas we found out I was pregnant, he has since then moved some clothes and some movies and his cat. He has been here for a couple weeks and I am so unhappy. I keep asking for space and he just says he will go to the other room, but I keep asking to come up with a plan so that he doesn’t live with me either yet or ever and he is refusing to leave. I feel trapped. He also keeps saying “you should have thought about that before we got pregnant” and yes I should have but that doesn’t mean I HAVE NO CHOICE but to live with him. I’ve suggested putting a camper outside as his bedroom, I’ve suggested him staying at his apartment (but it’s an hour away) I’ve suggested him getting an apartment in town. He just says no, tough. I am SO unhappy. I wake up and just want it to be night again. I feel relief when he goes out. I should never have trusted him again. What do I do?