don't know what to think

I don't know if it's my pregnancy hormones or just me. I feel that since I got pregnant my husband barely touches me or we aren't as intimate anymore. I have a feeling he started to watch porn again in his cell & it's eating me alive cuz I want him & need him sexually; but he's releasing his stress watching porn so he doesn't finds attractive or feel that he doesn't have the need to have Sex with me since he lets it all out with porn. I don't go through his cell and if I assume things and confront him it will cause a huge argument and I know he will deny it cuz it's happened before but it turned out that I caught him in the act that he was watching porn so he had to confess and he stopped it for a while.