I know that theres always 2 lines but do they get darker or stay faint and then one day BAM positive?
Pretty much! Sometimes you will see it start to get darker the day before but it goes from faint to positive pretty much overnight.
Sounds like you already kno to me. Lol. Thts pretty nuch how it goes
I think it may depend on what you buy. I have some urine strips and unless both lines are the same color it is negative. I just started using them a week ago (I had my Mirena removed in May) but AF arrived Sunday afternoon. I am now going to start checking around day 10 until I have a positive or AF arrives.