I just have a question about OPKs.
Last month I used the Clearblue digital OPK and got a flashing smiley. The next day it was negative so I retested with Ovuplan - also negative. After that I went on holidays and didn't test again that month.
Has anyone ever had a month where their OPKs have gone from a flashing/about to O to negative to O-ing? Just wondering whether my OD was the day with the flashing smiley or if it was after that.