Am I overthinking ??

So my boyfriend and I have been together for three years now. Recently I was using his phone to look up some local events for us to attend and happened to see he was on a reddit page. Curious i clicked on it and it turned out be a page of women posting naked pictures of themselves. I don’t mind him watching porn but this felt more personal. I mean he has plenty of pictures and videos of me.. am I overthinking this or am I valid for being alittle self conscious/ hurt?