hi i took levonorgestrel 48 hrs after my contact (aug 27). I took 4 tablets then another 4 for the next 12 hrs.I had my period in Aug 11 but sometimes I go early or late by days. This sept 8, I wasnt sure if I had a period or withdrawal bleeding but I decided to start diane 35 since it says that I should start it on my period..My "mens" was over 2 days ago but I started feeling abdominal cramps this midnight. I have dysmenorrhea problems when I have my period and when I started using diane since aug 8 there was only mild abdominal pain for a day then it went off. I am scared if the pain I am feeling now is due to implantation or is it because the bleeding I had was not my period but only withdrawal or could be implantation bleeding?