Girls, I took a pregnancy test last night. The result was negative, took one today and two lines appeared, the second line got darker hours later?

Anonymous
Girls, I took a pregnancy test last night. The result was negative, took one today and two lines appeared, the second line got darker hours later?
I took a pregnancy test last night and got negative until a few hours later when I saw another line. I thought ok, invalid.

Took another test today and two lines showed up right away, seemed very faint almost not there and colorless. Less than a half hour later the second line had darkened. I looked at both tests and the one from today is darker than the one from yesterday. If it was an Evap line and not a positive would it be like that? I have included pics
top pic Is from yesterday, bottom is from today.
Girls, I took a pregnancy test last night. The result was negative, took one today and two lines appeared, the second line got darker hours later?
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