Ovulation test

I decided to take a ovulation test on the Fourth of July for the first time in a long time after losing my baby may 26 2023. I always seen it very light on my ovulation tests in the past but when I took all3 of these on the 4th I just did not believe it was that dark I thought I was just seeing things . What does this mean on dark ovulation test. Yes I am 19 years old I should know but I don’t because I never had a mom figure to explain my period stuff , it always my father so someone please explain.