Me and my boyfriend had unprotected sex while I was ovulating.. And another two days after will Plan B still work?

See below. Levonorgestrel(Plan B) is not 100% effective in preventing pregnancy. If taken within 72 hours it will reduce the chance of pregnancy by 50%. It is somewhat less effective after 72 hours. You can take a repeat dose at day 5 although not approved for same. The copper IUD is the most effective emergency contraceptive.