Help - Evap or Faint positive?

I’m 8 DPO today…took a test in the morning and it was negative (please don’t comment that it’s early to test, I’m aware). I’ve had a feeling to test again this evening, so I’ve had a 4 hrs hold without drinking, and tested with a Clear Blue 6 days early. There was a blue, super faint line (same thickness as the control line), not visible on the camera, but it’s deffo there. I wanted to keep the urine in case I see a line, so I can double check it, but I just automatically flushed it down.🫣 1.5 hrs later I’ve tried with FRER & Conceive+ 6 days early, and both have been negative.😢 I’ve never had evaps on CB, but I know a lot of people do. Or maybe my urine was too diluted?