I'm not really sure where I am in my cycle due to a suspected CP last month, but I've been doing OPKs (mostly twice a day) and I keep finding they will get darker, nearly as dark as the control like but then be fainter again the next time I test and then a day or so later be darker again and then faint and so on. I haven't got a positive yet. Is this normal?
I've circled some of the ones where I feel like the test is darker in picture 2 to show what I mean.
Other months I haven't been able to pinpoint ovulation with OPKs either.