Confused!! OPK help please ?

Confused!! OPK help please ?

I got peak/positive on the advanced OPK yesterday and the wondfo was close to positive but not quite there. I had tested a couple hours before that and it wasn't positive, so I know it wasn't that I caught the tail end of the surge. A few hours later I took another and it was significantly lighter. I've tested every few hours and they were all lighter. This morning around 10 I got another very close to positive wondfo, and again they are lighter. Maybe this will be an anovulatory cycle?? Any insight?