Is it too early to do <a href="https://glowing.com/glow-fertility-program">IUI</a> on day 12? I went in for a scan today - 10 day. There were two dominant follicles - 20mm and 17mm. Did the follicles grow too fast? I was asked to trigger tonight. This is much sooner than I was expecting. Anyone have success with taking letrozole and <a href="https://glowing.com/glow-fertility-program">IUI</a> on day 12?