Need Help - 1st Month Using Opk

Gianni • Thu, Mar 05

I am not sure what day is considered positive! They all look positive to me but I am thinking Day 15 is the true ovulation day but it looks very similar to Day 14.

The following 4 pics were taken on Days 13-16. The single pic was taken this morning on Day 17. I haven't noticed any change in my CM so I am not really sure if this I have ovulated.