I've lost all faith in my boyfriend.

Every relationship goes through hard patches I know that. But I've lost all faith in him. Maybe a month ago we talked about my stance on porn and I really wish he wouldn't watch it, as I feel as it's extremely disrespectful and cheating. He agreed not to watch it. But last night I walked in on him after an argument and I was supposed to be sleeping on the couch. I'm 29 weeks pregnant and went in the room to actually talk to him and try to fix the situation. I would be a little more understanding if it was during the days he's out of town at work too. ( Monday- Thursday) but it wasn't. I know I shouldn't be short with him but I don't even know what else to do. I'm really angry and hurt and he sees nothing wrong with it. I don't know if I wanna raise my daughter with someone that can't even respect me.