am I overreacting? tmi relationship problem

Liz
I literally have no one to talk to about my relationship problems and decided to turn here, maybe tmi? but my fiance and I have been together for about a year and a half, engaged 3 months ago and I'm 8 months pregnant. I always want to have sex with him and try a lot but he never seems to want to. today I decided to check his internet history and found lots of recent porn videos that he's watched, all blonde girls and I have black hair. I've known for a long time that he's more attracted to blondes but he won't ever admit to it, he says he's not and he likes brunettes/women similar to me. it just frustrates me that he will almost refuse sex with me but will watch porn videos of blondes, mostly teenagers. should I be concerned that he's not attracted to me or am I overreacting? I don't know what to do or think 😞 please help!