If you have sex on a thursday night unprotected. then you take a plan b the same day (saturday) as your period . is there a high chance of you being pregnant. or the chances are lowered because your period came already ?

Plan B ?'s: If your periods are regular (24-32 days apart) and "unprotected sex" was ONLY "two days" prior to your period onset, the chance of pregnancy with this episode of sex is minimal, and "Plan B" has nothing to do with preventing pregnancy. If you had unprotected sex in mid cycle, pregnancy is certainly possible. Ask your gyn about low dose bcp's to reduce pregnancy risk.