I need advice ladies 😩

My husband has been so good to me, like the best. We have been married for almost a year, best year of my life. We have both watched porn before being married, and while I was pregnant We both did a few times too. Well I talked to him about it a couple months ago because I felt super self consious because I had my baby. I told him that I can't handle it at the moment, the idea of making yourself feel good while watching another women. So he agreed and said he wouldn't. He had been acting strange, putting his phone down when I would walk in  the room and stuff, so I was concerned. I was paranoid that he was looking at other women, and he would promise me he wasn't. Well a month ago or so. I went to take a shower while my baby was asleep, i got out of the shower and was excited to have sex with him, well he went to take a shower and so i looked through his phone. Well he was watching porn. I got super upset, didn't cry, but I told him I didn't want to fight. So we didn't, we've talked about it alot and i'm still having a hard time trusting him. I want too, but I can't. And we have sex whenever he wants. So i'm not sure what i'm doing wrong. :( help please.