Am I Overreacting bc I’m upset my husband cheated on me? :/

I (20f) found out that my husband (54m) had cheated on me 1482 times while I was getting treated for cancer resulting from him forcing me to take some foreign weight loss pills because he didn’t like my stomach was getting bigger since I’m 4 weeks pregnant with our child … it really hurt my feelings so I asked if we can talk about it and come up with a compromise maybe letting him sleep around and having some sort of open relationship (only on his end though because he is possessive of me and I’m not allowed to exist on the same planet as another man lol) but he didn’t take it well.

I think it was also kind of a red flag when he sent me to the hospital last month because he strangled + threw a beer bottle at me as well as shot my dog because I accidentally sneezed when he was playing league of legends (he says I can sneeze when he’s at work but he’s unemployed and we live in his moms basement) so any advice is welcomed, how can I make my husband stop hating me for existing? :/

(Obviously satire but this is how some ppl on here sound)