Ovulation test

Jennifer

I need help!! so earlier this afternoon I took the clear blue digital ovulation test and it said my LH was low because I got a blank circle. This time I took the the clear blue digital at 7:11 pm and it says I’m at my peak fertility, but then my equate ovulation test says my LH is negative and I need help determining which one to believe (I am also starting to light cramp and have already had my period)