What is the best date for IUI after positive LH surge?

Hi. I am currently trying to do IUI while taking Clomid 100mg. My doctor told me to go in to do the IUI 48-72 hours after I get a positive LH surge. But that sounds like it too late. I thought that I was supposed to go in to do the IUI 24 hours after I get the LH surge??? Can someone please clarify this for me? I have already done unsuccessful IUI's. It was painful too. My doctor insisted that I need to wait at least 48 hours before doing the insemination. What should I do? Should I just go in after 24 hours anyways?

I just did my first IUI and my 5th month of 100mg Clomid. I went in on cd 12 to get an ultrasound to see if there were mature follicles. I then got an hCG shot to trigger ovulation and we did the IUI the next day. I have a book that the IUI should be done between 12-24 hrs after the LH surge.

My ob did IUI 24 hours after the morning surge. Good luck!!

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