Hi there I have PCOS
And I use Clearblue digital. I have been on Metformin since May and since starting this I have had regular cycles that I don't get on my own. I had two af's!
I use OPKS once a day everyday from cycle day 9 and onwards. My Cycles are 30-34 Days around this region. So this is my first month I have used them I waited until after I had a couple of af's before I start using them. So this month I tested from CD9 and everyday was negative and finally today on cycle day 15 its positive
And I have been cramping, aches in my breast and watery CM too....
Im In the same boat im not 100% why they are not accurate, weather its something to do with hormones or the fact cycles can be so unpredictable
Im sorry I couldn't help much more. But im hoping and praying this is real.