So confused!

So I have Pcos and don’t ovulate on my own, last cycle I had a chemical pregnancy after using Letrozole. We didn’t use it this month but I kept testing and got a positive opk cycle day 15. Typically I test until I get my “peak”. This cycle it was positive then went negative then back to positive and back to negative within two days. Is it unlikely I ovulated? The first pic is morning cd 15 and the second is evening cd15. The last pic is morning cd16 and cd16 evening was negative.

I can’t get these in order but this is cd16^