What would you do? Controlling bf has no trust

So my bf and I began dating August of 2017. I was still talking to other guys and I slept with some of them while we were dating in the early stages. Fast forward a few months and my bf finds out about the cheating and we fight, I say sorry and he forgives me. Ever since then, we have been on-again-off-again due to his trust issues with me. He will bring it up, ask me to prove timelines, makes me message whatever random guy he’s unsure about, kick me out, threaten that our relationship will be open or that he will cheat on me, and so on. He has always ended up taking me back though.

I got pregnant with his baby in March. I’m faithful to him, and when we last got back together after a breakup I told him if I agreed to get back with him, he had to work on the trust. Because no matter what happened in the past, it’s unfair to keep hurting me about the same thing again and again when he chose to forgive me and wanted me back. He keeps getting upset about random things though, guys that like or comment on a post I do or message me saying congrats on my pregnancy.

The latest thing was two guys I know with testicular cancer, one messaged me on facebook saying congrats about my pregnancy. My bf’s cousin also has testicular cancer, and I told my bf that most likely he can still have kids. He asked how I know, and I said because I know someone from an online dating site a long time ago with one ball who told me he can still have kids. I never met that person. But my bf doesn’t believe me and thinks I’m talking about the guy who messaged me on Facebook about my pregnancy. He told me to find the Instagram of the guy with one ball who can have kids, so I did. With a cancer-related post to prove to him. Then he said when he gets home I need to message him about his health to prove it. Which is weird, he’s fine now and I haven’t talked to him in years. He thinks I’m lying and talk to the guy with cancer from Facebook, which I haven’t done in a long time. He just happened to congratulate me on my pregnancy and my bf flipped out. I’m not lying but he doesn’t believe me. He’s now threatening to go cheat on me, asking what I would do if he did, and threatening to make our relationship an “open” one. He told me to pack my stuff if I want to and leave.

He called me a “retarded lazy slut”, I told him it doesn’t hurt my feelings because I know my self worth and those words aren’t true. I love him and want to have a happy family with the baby and him, but it’s so unfair of him to pull this kind of thing when he asked for me back after everytime he broke up with me before and agreed to work on trust. He agreed to start over fresh but continues to hurt me over and over about the same thing. I get why he’s hurt, but it’s not fair to be this controlling.

I don’t want to lose him. I don’t want to raise the baby as a 25 year old jobless single mom living in my dad’s house in the partially remodeled studio-garage. But I don’t think he’s happy and neither am I when shit like this happens, which is often. It’s not healthy, especially for the baby. But I have no other option than to suck it up and stay with him and hope it works out, or listen to my entire family criticize me for living at my dads and not knowing what I’m doing.

I’m so confused and heartbroken. I don’t know what to do.