I am on the pill but last week was out of the country and wasn't super timely (took it within a few hours of my normal time) and had a few looser bowel movements a few of the days. When I got back my BF and I had unprotected sex, so the next morning I took Plan B even though it was the start of my inactive/placebo week. I usually get my period on Tues or Wed - it's now Wed night and I haven't gotten anything, just a few spots of brown this morning. Did taking the Plan B delay my period? Or will I miss it?