Ok, am I crazy? In person I swear I see a very faint line. Help!

9 DPO so I know I’m at the very earliest time to test- but I swear to god I see a very very very faint second line. It’s really hard to get good lighting in a picture... OR it’s just my brain messing with me!

At 5 DPO I felt cramps in my lower back and nausea which prompted me to take the test today.

Thoughts? Should I keep testing or just throw in the towel for this month?