Hook effect? Is this normal? Please help!

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I’m 6w2d (or 3d depending on the app 🙄) and stupidly decided to take a first response rapid test tonight. This is what it looked like:

I absolutely panicked because I had this beautiful dye stealer one week ago:

I have spent my night now reading up on the hook effect, which made me feel better. Is it possible that that’s what this is? 😓 I haven’t taken a test with diluted urine like it suggests because I’m scared.