in june,i had a 46 day cycle,july was a 27 day cycle,my last cycle was 27 days apart also,which was august 21-25,i had unprotected sex on september 5-8 which was cycle day 16-18 for me.,That month i didnt get a period,now its october 11th.still no period,im currently on cycle day 52 when i wiped i seen brown with a little mucus,could this be my period?