Opk results... levels dropped?

I feel stupid asking this but bear with me

This was my opk this “morning” (at 2 PM). I don’t actually use morning urine.

This was my opk this afternoon at (5:40 PM)

I only had one cup of water and that was at 3 so I don’t think my urine was diluted.

Anyway, my question is, since the line is obviously lighter, does that mean the test was negative to begin with? I’m thinking maybe it wasn’t a true positive result (like I thought it was positive but it really wasn’t). Does that make sense?

- I also wanna apologize for posting so much. This is my first month using OPKs and I have no one else to talk too