I got the plan b after I had intercourse and a week later I got my period well something like a period it was light and brown. Usually my period is really heavy and now I got it this month and it was the same as when it came after I took plan. It is extremely light and brown which is so unusual for me. Does anyone know what that means? Should I go to a doctor? Will I be okay, I just don?t know what?s happening.