Testing out trigger confusion! Dark, light, dark, light

I have been testing out my trigger. I am 11 days past trigger and 10 dpo. I feel like my tests go light, dark, light, dark.

On 9dpo second morning urine I had a darker test than 8dpo. Today and 10dpo, fmu was darker than 9dpo on dollar store test but free was lighter? Smu was almost non existent on dollar store. Confused!

I got excited this morning because of the dollar store test with fmu, but then the next one was nothing. I know it makes a difference with urging concentration but it seems like my test keep going back and forth.

Thank you!