I keep hearing different answers. Some people and doctors say "no" that Plan B works to prevent ovulation, once ovulation occurs there's not point. Others say "yes" that Plan B is to prevent fertilization of an egg and implantation. I'm really worried. I had unprotected sex with pull out method on the day I ovulated ( according to the period app) took a shower ( like it matters) then took Plan B about an hour after. Worried.