Letrozole & ovulation woth PCOS

I just finished round one with Letrozole days 5-9. I have PCOS and do not ovulate on my own and when I've tried ovulation tests before (prior to learning I don't ovulate) the opks would come back all over the place (I use the clear blue digital easy read).

I took my first opk on cd 8 and got a O. I took another on CD 9 and got a solid smiley. I have taken an opks on cd 11-14 (today) and have gotten all O. Could I have ovulated early or is it from the letrozole that I got that solid smiley?