Letrozole and OPKs

Je

Good morning ladies,

Just looking to get some insight from others on their experiences. I'm relatively new to <a href="https://glowing.com/glow-fertility-program">fertility treatment</a>, and am currently doing cycle monitoring with 2.5mg of Letrozole day 3-7. My body is responding very well to the Letrozole, and the last two months I've had at least one mature follicle (18mm) by day 12. They have also discontinued monitoring after that date, stating that my bloodwork indicates I am starting to surge/ovulate. For curiosities sake, I continued to take OPKs last cycle which didn't indicate a positive result until day 15. I was curious if anybody else has had this experience? I realize that the bloodwork is likely more accurate, just wondering about the discrepancy. We will be changing up the plan this cycle, as I have had three unsuccessful cycles with the current plan in place.

Thanks in advance for any opinions/advice.