My previous mens. Period was approx 14 or 15th september & I had a protected intercourse on 10th october at approximately 8.00 to 8.30 pm. After that on 12th october took I pill. So, I want to know about my previous ovulation week? My due date of mens. Was 15th october! but it delayed & occurred on 18th of october at mid night. So, kindly confirm me sir/maam, having intercourse on 10 th october with a protection at nearby 8.00-8.30 pm also on 12th of october had a ecp i, e (i-pill) on 11. 00 am. Was that safe for me? Kindly reply back.