I've been taking Amethia Lo (brand of LoSeasonique) for a year and a & 5months now. This BC affects the body to where I'm only supposed to have my period every 3 month's (4times a year). However, I came up positive for strep last Monday and my doctor put me on amoxicillin. It has been exactly a week today since i began taking my prescriptive medicine. I also have been regularly taking my BC everyday as normal.
Today, My boyfriend and I had unprotected sex, but he didn't ejaculate or get close to climaxing cause I stopped us from the fear I could get pregnant.

So after the information provided... Could someone please let me know the chances of me getting pregnant and if there's anything I could do yo prevent it? Thank you.