I had my second <a href="https://glowing.com/glow-fertility-program">IUI</a> on 12/28 (first cycle with letrazole). I had an 18mm follicle on 12/27, and my lab work looked good that day too. Today I went in for my CD 21 progesterone check and my level was 7.22. My RE office said that was good and indicates I ovulated but I read online that this is actually low and would not be able to support implantation. Anyone have any insight?