My last normal period date was August 18th which lasted for 5days. I had to take ipill on 24th August. Then on 3rd Sept I had a dark brown discharge for 3days which continued like a period with normal bleeding for next 2days. And after that I have still not got my periods its 16th October already. I did home pregnancy test 4 times and all came negative. Last home pregnancy test I did on 15th...which was also negative. Pls help as to y my periods have not come yet as I have never had irregular.