I stopped the pill in March and had a withdrawal bleed.. At the start of april had my first natural period although it came a week early. I am late on my period on by a few daysand still haven't got it. I had sex 11 days ago and we used a condom and it didn't break but took plan b as am a bit paranoid as i thought the condom was slipping during sex but when he came out it was on the whole way up..(plan b was taken within 19hrs of sex). Am really worried. Did a first response test this morning and it was negative. Is my period late as a result of combination of plan b and stopping the pill. I am trying to relax.. I am experiencing pains on my left hand side and having mucus. Do you think pregnant??