Hi Ladies!

I'm on cd31 of a long and roller coaster of a cycle. I decided to use a Wondfo OPK this afternoon and got a faint second line. I know it needs to be darker then the control line to be considered positive, but I've also seen online women having a progression.

Since my cycles coming off BC have been very long I'm not quite sure when I'm going to "O". Should I keep testing to see if the lines get darker? Thanks!