Can someone explain?

So I (16m) have been having this reduculous issue and I don't know what to do about it and it affected my relationship alot. Sex is so unbearably uncomfortable to talk about. I have had sex and I do masturbate and stuff but Even just songs talking about sex make me uncomfortable to the point where I have to walk out of the room while pitbul or something is playing or I feel like I'm about to have a panic attack. It's not like I'm asexual or anything like I always wanted to have sex but I just could not for the life of me being it up without freaking out. Please help me figure out what's going on I'm so confused

(Edit: me and my friends also have movie night video calls and any movie even remotely having sex as a plot makes me wickedly uncomfortable such as Superbad, American Pie, and 16 candles)