Having a rubbish time with cheap opks, on CD15 and still no surge. I got a clear blue digital opk pack, the pink one, not the 'advanced' purple one.
I was thinking I could test with it tomorrow and if it's a blank face I will just assume I missed my peak and stop testing, but can I use the same holder next month? I will have 9 test strips left which would be fine, but would it mess up the holder if I stop testing after 1 day this month and then start again next month?