Lh strip getting darker again 3 days after ovulation?? Opinions please

Ma

So I had a mc at 5+3 that started on 8/9. On 8/21 I had what I believe to be a positive ovulation test. I posted here asking opinions because the app still said negative and typically the test line is darker than control with mine, and this was just about as dark as the control.

For the past few days my strips have been trending lighter, then all the sudden today they seem to be getting darker. Has anyone has this happen or have insight? I usually don’t track after ovulation but since I haven’t had a period yet I’m testing daily.

First picture is my suspected positive test from 8/21.

These have been my tests since the day after my peak