Should this bother me?

So Im currently on my period, and me and my boyfriend have had sex on my period before cause we just get too horny sometimes, (don’t judge) well the last two times we did it, it kinda grossed us out, well tonight he was horny and was like “I’m gonna go watch porn” and it kinda bothered me when he said that.. should him watching porn bother me? Does it upset anyone else or am I just like overreacting??