Positive line disappearing😣

Hi, so like a few days ago I got some vv faint positives and now when i take pregnancy tests it’s faint but it shows up as soon as the dye runs THEN 5 minutes later it almost fully disappears🤨🧐

What does this mean? I don’t want to make myself believe I’m pregnant before i see a flamin’ BFP because I don’t want to get my hopes up, I’m honestly worried about a chemical pregnancy😭

Has this happened to anyone else?