I'm using opks as I don't have a regular cycle, and discovered when using them to conceive ds1 and ds2 that I often ovulate late in my cycle.
This month I've had lines getting darker over a few days, a strong line but not as dark as the control yesterday, along with ovulation pains, today only a very faint line.
I was under the impression that if there wasn't a line as dark as the control then it wasn't positive. Have I ovulated this month or not?