My husband and I had sex last night (june 14) spur of the moment sort of deal and we didn't use anything, but he did pull out, My last period was June 2, and according to 3 online ovulation calculators i'm ovulating.(Your next ovulation will most likely occur on Wednesday, Jun-16-2010. Your fertile days are between Sunday, Jun-13-2010 and Friday, Jun-18-2010.) I took a Plan B pill this morning within 12 hours of intercourse. I know they say Plan B is effective in preventing ovulation, but what if you are ovulating? How does it work then, and is it still effective? Has anyone else dealt with this?