How do these work? Do you get a second line when you are nearing ovulation which goes darker than the control line when you are 24 hours away, or is it random as to whether you get a second line?
I have used these for the last eight days and just got the control line, no second line at all. The thing is, I think I ovulated the week before (lots of EWCM). But that was only day 17 of my cycle, my last cycle lasted 42 days (this is only my third cycle after MC in March) so thought day 17 was probably too early. I am on day 27 now.
I have been BDing loads so not worried, just wondered how likely it is that I OV'd at day 17 as I suspected at the time or whether I haven't OV'd at all yet this month.
Also I drink lots of water during the day, I stop 2 hours before i test but I wonder whether my urine isn't strong enough to detect the surge.
Any advice greatly apprectiated!