HELP! FRER being weird

Becca

Ok so this AM I got a VFFFL but bc FRER has been so shitty I dipped a second test in the SAME URINE and it was negative. Figured the first one was a fluke.

Well the same thing happened this afternoon. First test was VFL second test was negative. Am I just getting one indent in each box or wtf? Pics below of the 2 positive test. Has anyone had a similar experience??