Extremely paranoid about pregancy

So I have bad anxiety like very bad. And I always get paranoid about becoming pregnant someway or somehow. My boyfriend and I haven’t had sex since October and I’ve gotten two periods since . And things like “someone is doing me in my sleep” or “he fingered me with cum” etc.. always runs through my mind even though no one would do that and I would probably wake up if someone was doing that. Idk how to get my mind off it I’m being ridiculous and driving myself crazy and will stay up until 6am to make sure no one touches me in my sleep (which no one EVER does) .

I sound crazy but I need to get it off my chest