Can anyone ovulate at the end of pill pack? M on krimson 35. My pill pack of dec got over on 24th. Had unprotected sex activity on 25th but no vaginal intercourse has been done. If accidentally some sperms enter will their be any egg to fertilize (since I take the pill within 2 hrs time frame. I got my period on 28th dec which continued upto 2nd. So if by chance fertilisation occur will it be able to survive withdrawal bleed and implant later or will just be flushed out with the menstrual fluid. Never missed any pill and started using the pill from november. Lots of queries in my mind which are needed to be solved!