Insecure?

I’ve noticed recently my partner has been watching a lot of porn. I know it shouldn’t bother me, but everyone knows what porn is and everyone knows it’s mainly the women that are the star of the show. I know I will never look like those women. I’m a mother and I have a mother’s body. Also, is he watching because he isn’t getting satisfied by me? Any ideas on how to make me feel better and be okay with my partner doing this?