About two days ago, my boyfriend and I had sex without a condom. I had been on the birth control Implanon for about 6 days, so we figured it was safe. Now, I am scared out of my mind that I might be pregnant because I found out from a friend that all birth control needs about two weeks to become effective. Today, my boyfriend bought me the Plan B pill so I am hoping that will work. What are the chances of me still being pregnant. I'm only seventeen and in high school... I am not ready to have a child.