Does this look like a chemical ?

Top test was taken yesterday but the line has lightened since then when it dried but can still see a line, second was taken with the next pee and there was blood cuz I had gotten what looks like my period. Third was taken before bed last night and the last was fmu. No line anymore. Could the top two be bad tests? The lines showed up right away and then I got what looks to be AF. Just confused.

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