Sex, cheating, & feelings.

So I know a lot of women on here have seen this question so I’m going to reword it to my situation. Now I know watching porn isn’t physically cheating and I totally agree! BUT... isn’t it a problem when your SO is watching porn DURING work hours, and would rather get off at work? We have lots of sex. But there are those days where I’m just not in the mood at all... I’m not against porn by any means but when it comes to him watching it at work and when I’m not with him... it makes me feel very ugly and self conscious.... like he would rather get off to some other chick then me.... please tell me if I’m wrong.... I’ve been cheated on in the past and it’s starting to feel the same way. It’s getting to the point where it’s more him hiding it. Your thoughts please!!!!