Hi. I'm wondering if any of you have had IUI scheduled based on a positive OPK instead of a trigger shot. Last IUI cycle my mid cycle ultrasound was scheduled for CD 13, but I got a positive OPK on the morning of CD 12 so ended up just doing the IUI the afternoon of CD 13. I'm doing this cycle on my own and decided to test 2x a day with OPK to better pinpoint O and sure enough got my positive OPK in the afternoon. If this happened last cycle it's possible that my IUI was a full 48 hours after my initial surge. And if I'm on the early end of both O after LH surge and egg lifespan then the egg was probably long gone by UIU time. Frustrating. The standard for my clinic is to test with 2ndmu before 10am and call with positive by 11am to schedule IUI the following day. I'm just thinking this might always be too late for me. Will definitely talk about this with my RE and ask for earlier and more frequent monitoring for next UIU cycle, but just curious if anyone here has also experienced this type of thing.