Thanks for the replies you two.
Yes, especially since I'm a medical student I do know better---but sometimes irrationality strikes. And sometimes I'm just given to paranoia. Example: after I make a purchase, I check my credit card 10 times to make sure it's in my wallet. My mind just so (unhelpfully) supplies me with the stupidest, craziest scenarios.
Probably comes from reading too much pathology. Or that I just need some mental help.........probably the latter
Just for the heck of it, I am going to just go get tested on Wednesday. Not just to get my mind to let go of it, it wouldn't be bad to concretely know that I'm negative. So that I know for the future I'm clean (well, besides the HPV) going into any new relationships that I may have later.