Masturbating to porn ?

Porn? Do you ladies allow your S/O to watch porn ? Or am I crazy because I don't want my husband to be sexual in any way (getting off) to another woman naked. I HATE porn and think it's disgusting and degrades women.(that's a debate for later) but I am not comfortable with it and we've been together over 2 years and I told him from the start I didn't like it, and today I joked about it then went to the store to get HIM something, I came back and found his cum covered boxers in the hallway by the washer in the floor. We have sex once if not twice a day, and had sex this morning and he just wanted to have sex all day when I didn't want to (except once this morning, and due to me being pregnant , my uterus hurts after sex no matter what), and I got mad at him for it, he even went as far as trying to hide it by deleting the porn out of his phone and showing me after I noticed what he had done. I'm just not comfortable with it. And I've asked for it to not be done as a respect thing and it really disappoints me to know he enjoys it. I have my reasons why I don't like it. But no negative comments please . Sorry it's so long!!