I'm using a persona to TTC! The first 2 months were fab, I got an O and everything. Now I'm on CD22 and I didn't had an O and I'm from the 22 days I had about 20 days red days. I already have green days and I'm dead confused! I can't be preggie cause I was on and hubby left on exercise the first day I got on. I even did a test to make sure! Any suggestions what could be the matter????