Had my last monthly period beginning on 5 May and had unprotected sex 18 May but he did not ejaculate in me and took emergency pill 3 hours after the incidence. Now I've not had my period till now and am overdue. Took home pregnancy test on 8 June but came back negative, again on 17 June and still came out negative and the 30 June still negative. Could I be pregnant or is it the pill that has caused change in my cycle. But sometimes I feel some pains at my abdomen through this period like my menses is coming but nothing comes out and the pains do last for like a day. Please what should I do.