Took with fmu, looked neg, looked at it hours later and saw this. What do you think?

Gloria • Been with my first love since I was 14❤️ have three girls, and had our boy 8/4! Life is great
Hi everyone. I took this today (af due in 3-4 days) looked negative in the morning, but looked at it later and saw this. What do you think? I never had a evap like this before. Thanks in advance.  Btw, had on two different tests 

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