Hi everyone! This is my first post. I am a 42 year old single woman getting ready to do IUI for the first time. I am using the OPKs to monitor ovulation. I wanted to get input regarding timing of IUI. I travel for work which is making the timing tricky. I guess my main questions are: how often should I monitor with the OPK's during the estimated possible ovulation time- once a day, twice? What's the best timing to do the IUI after a positive test? My clinic is not open on Sundays. Is Monday morning really ok if I have a positive test on Saturday morning? When I go in for the IUI, do they do an ultrasound to confirm that I am ovulating before they do the procedure? My doctor has me on letrozole days 3-7. I am on day 11 and just started monitoring for ovulation yesterday. I would love to hear of successful IUI timing experiences that are recent. Thanks for any info you can share!! Much appreciated!