Negative right after positive?

Has anyone taken a pregnancy test and got a faint positive then got a negative with a different test right after?

I took one with a Walgreens brand test and it showed a faint positive. I was in denial so took a first response and there’s no line. I didn’t use the same urine. Is this normal?

I did force myself to pee for the first response test.

Don’t judge. Lol