So I didn’t read the pamphlet about plan B but I took it last month in the beginning of the week. Anyways, i had my period following week. This month I haven’t gotten my period at all I had sex unprotected he finished inside 12 days ago. I thought it would be safe because I thought my period was coming because I was crampy and nothing she hasn’t showed. Is this just a regular side effect?! Could I have even ovulate this month?!