I had sex on May 9th 2016. Took Plan b the next day the 10th within 12 hrs. I started my period on the 19th it was heavy some days and light others. I didn't really finish till the end of the month (May). My boyfriend came outside of my vagina on the 22nd of May while i was on my period and I took the pill again the following day. Now it's June 30th I'm a week late, but I'm feeling the cramps and I feel like my period is coming but still mother nature hasn't made a show.