I took the plan b pill two days ago within 25 hours. It was a one time incident and he did pull out, but regardless I wanted to make sure and took the pill. Idk I feel kind of grouchy, and possible lower back pains but I m not sure if it s period wise or sports related. I get my period three weeks from now, hopefully and I m just wondering if I should still be stressing over it this bad? I can barely sleep at night. What are common side affects of the pill and when do they usually start? Thank you so much!