Hii I did sex last month on 28 october and took ipill on next day within 24 hours after a week I got brown discharge then bleeding for 4 to 5 days after 5 days when bleeding was over I took pregnancy test and it was negative but my period should come on 20 th november but am bleeding again on 17 november first it was brown discharge then its bleeding normally but I also have upper back pain and leg pain and lower abdomen pain so please kindly help me to find out that am I pregnant or not and there is any serious if I have these pains.