Disgusted By Everything.

I have this...problem? The slightest thought of a penis near me makes me want to gag, like when I see posts about girls who let their BF cum in them or in their mouths, I feel like I want to throw up. It puts this nasty thought in my head of my bf doing those things and it's disgusting. I don't think it's weird for other girls to have it done to them, but thinking about it happening to me would make me throw up on the spot. I think this bothers my BF that I'm like this too...I've never had sex or even touched a man so maybe it's that? I don't really know.. I would appreciate your opinion on this. Please & Thank you.