I see ovulation each month, they get progressively darker, then lighter again, so I know I ovulated. But I do get positives as soon as cd12 or as late as 16 with a regular 28 day cycle
After I posted this I actually got a slightly darker line on it..i'm waiting it out for this cycle see if they change
Well I know it's a VERY common misconception that if you have 28 day cycles you ovulation on day 14. Some women will ovulate much later in their cycle and have a shorter luthel phase. There are many women that have used them and should be able to give you good advice.
i used strips for 3 months from day 8 till 20 and never got them to say i was ovulating.