Confused ovulated?

I have been using opks last 6 days. All with lines, started with faint line got darker (not positive) now they seem to get lighter? It's not near my ovulation time, but I am on CD 14. I ovulated late last month - guessing because of the iud removal. CM is very watery and starting to get heavier and more stretchy. Felt right sided pain today, last month I'm sure it was on my left side. I'm so confused! ​