Confused again!

I took a test this morning and got a faint positive and then I took another one right now and got a negative... I’m not sure if I got a false positive because it was a blue dye test or it’s negative because I took it late in the afternoon and my pee is diluted. My last period started either the 5th or 6th of January. But I had light pink spotting a few days ago and thought it was implantation bleeding. I’m so confused and stressed out over this! Help