I had my IUI today but it was at least 15 hours after I ovulated. I am on a natural cycle and had a positive surge on OPK on Tuesday morning. I went to the RE that morning and they found one 18+ follie. I was given an HCG shot and told to come back the next morning for the IUI. Around 7:00 p.m. on Tuesday I started to get really crampy. It lasted for about an hour and then disappeared. I knew I was ovulating. When I went in for an ultrasound this morning the follie was gone, which proves that I ovulated. I went forward with the IUI b/c my RE says I can still get pregnant b/c egg could survive up to 24 hours. Question, has anyone had success with IUI after ovulation? I am wondering if I should have gone forward with it or called it off. I know it is too late now, but thinking about next cycle.