We are doing a femara/ovidrel/IUI this cycle. On CD4, we did my initial scan. He told me to start femara that night and repeat the scan in one week. When I went to schedule, I found out they couldn't get me in before work. I asked the RE about the following day (CD12) and that if possible, I'd like to do the IUI CD15 since I was off work CD15. He said that probably Worked better and told me to start the femara a day late (CD5) and scan will be CD12. I ovulate on my own CD15, and last cycle we did femara/ovidrel and had the IUI onCD13. Now I'm worried that I will ovulate too soon, shortly after the ovidrel. Will the ovidrel keep me from ovulating CD13-14 if I take it CD13?