Hello Doctor, On 8th July I had unprotected sex with my partner and within 6 hours I took an I pill and my periods were due on 12 July. On 18 July, I started to bleed for 3 days and I really don?t know whether it was withdrawal bleeding or normal periods. My next periods were on 12th August and I checked so many times, my pregnancy test is negative and even my urine test also says it?s negative. Then please help me. Why I am not getting my normal periods. When they will be back because I get cramps but no periods yet. Please help.