CD 9 and OPK getting dark, why?

So I typically have a 36 day cycle, and I noticed yesterday (CD8) I was having EWCM, I was confused to why I was having this so soon after AF, so untested with an opk and it was negative.... Today, CD 9 I contine with this EWCM, so I tested with an opk after wool and looks what I got.... Last month I ovulated on CD 23.... Not sure why I'm ovulating early, tell me what you think