suspicious of husband

Okay so I want to hear honest opinions and experience... I know my husband watched porn and I do not have a problem. But I've recently encountered some history that I think was supposed to be deleted for webcam girls like he was browsing them, than I saw a specific girls name on instagram from another state that he was searching on porn sites as well. I confronted him and he said that it was an old porn star but I researched her and no she wasn't he lied to me and I never said anything further. She is most likely a webcam whore. But anyways moving on, I am 7 1/2 months pregnant with our second daughter I am huge and do not feel sexy but I give him sex a lot because I want him to feel wanted by me. but recently have been turned off because his distance toward me and I also noticed he had an app on his phone called photo vault that I can not access with any of the passwords that I know it is very suspicious also his Facebook messages had popped up on his open tabs on his phone but no recent messages so it looks like he is deleting messages, I just want him to be honest and tell me or if he is having an affair I want to know I don't want to be stupid I want to be he one he can talk to but I don't know because he gets mad and yells that I am not trusting him and he gets offended.