Ovulation...help!!!!!

Ashley
Last month I did not ovulate I found out after an ultrasound where they couldn't see the ruptured cyst...they said I have pcos mild all my hormone levels were normal...anyway I took metformin and Letrozole this month and I have been using clear blue digital test and the box says you should see two days of high fertility and 2 days of peak...today was my 3 day of high...if I never get a peak does that mean I did not ovulate?!