Am i wrong? (Long rant)

So a couple months ago i found out my SO's been watching porn behind my back. One day he forgot to close out the pornhub tab and i looked through his history and he's been watching it for a while. When i first found out, we were having sex regularly so i don't understand why he's watching it. I confronted him about it and he says its because i told him i dont like anal and i dont wanna try it again... and that "if you're not gonna do it, im gonna watch somebody else doing it."

I'm now 6 months pregnant so we dont have sex as much as we used to. He is still watching it behind my back and hiding it. When i confronted him the first time i told him that i did not want him watching it anymore and he said he wouldn't. Whenever he uses the bathroom to poop or take a shower, he's in there for a while. One day i noticed that he walked out of the bathroom with a phone that i've never seen (he doesn't have his own phone right now). So now i realized that whenever he's supposedly "pooping" or "showering" he's really watching porn on the phone then he hides the phone. I just now found the phone in his pants pocket and it was on pornhub.

Am i wrong for being so mad that he's still watching it? It makes me very uncomfortable that he's looking at other girls naked bodies and watching them have sex. To me, i feel like its almost cheating because he's getting off to other girls that isn't me... It makes me feel insecure about my own body because the girls look way different than me. He also gets mad if i don't want to have sex... like pregnancy makes sex very uncomfortable for me now and he just doesn't seem to understand that.