Opk innacuracy?

Smanatha

Hey Guys! So I have pcos, I’m on metformin and clomid this past cycle. 50mg. I feel like my opks are all over the place and they’re still pretty high, I’m so confused. I also used the clear blue advanced ovulation tests, cycle days 12,13,14 I had the flashing smiley face, on day 15 I had a solid face. How accurate are they? On cycle day 15 both my opks and clear blue were “peak” but the next day I tried with my other clear blue test and it said wasn’t fertile?