So last night I used OPK from clearblue advanced... was supposed to peak last night according to glow and my CM was super eggwhite - 4 days of highs. I used a brand new monitor when I was using last months reader with all my highs... just realized it saves data so when I tested last night it wasn’t valid... anyway tested again this AM with another high result and drier CM. It is possible I missed my surge last night because of a brand new reader? Thanks!!!!