I had unprotected sex and ipill was also taken nearly before 48 hours and withdrawal bleeding also took place for 4-5 days. what are chances of pregnancy ?

Remote: From what you described, the risk of pregnancy is remote. You may wish to a home pregnancy test at 4 weeks after the episode of sex. If you do not wish to be pregnant, use contraception all the time, every time. Consider implanted contraceptive, or IUD. Practice safe sex. https://www.hopkinsmedicine.org/health/wellness-and-prevention/safer-sex-guidelines Get HPV vaccine, Wish you good health!