Temps, and DPO

So, I got several positive opks on cd 16 & 17. on cd18 they were finally negative. Looking at my temps here, I don't think I ovulated on cd16. But rather cd17 and possibly cd18. Bc on cd17 is when temps started going up and are going up a little bit each day. Also today I'm having a lot of creamy white CM. If that means anything. Cycle is usually 26days and pos opk on cd14. But it was later this month so (expected ) AF would be a few days later too.