What is the chance that i'm pregnant?

Not sure why you say you're a "terrible person". But, yes it's possible. Why don't you drive to walmart and get home test. Pee on the stick and see what happens. Then you will know for sure and can quit worrying about it. Then, if you can't get to your regular doctor ASAP and get some birth control pills, call another Dr or planned parenthood or something and get some properly take them so you don't have to worry about these things anymore... and let him pump away.