I have been on The Pill for years. Well, last week my dr. put me on penicillin for a sore throat-but it was the type that you take for 3 days, and it stays in your system longer. I took the last penicillin pill on Monday and had sex on Thursday night. He did pull out(I know about pre-ejaculation) but now I am wondering how much at risk I was? If it makes a difference, today was my last active pill, so I am close to my period.