I took a test a few days ago and it showed up a very faint line. The picture below is the first test.

I took this test this morning with first pee and at first nothing showed up and a minute later it showed up this. Well I went to go get a bottle of water and was gone maybe 5 mins and it was blank. The line does seem darker before but it went away. Is this a positive or just two evaporators lines?

And according to the app I’m 9 days away from my period but my period last month was really weird. I normally bleed 7 days with painful heavy flow and last month I wore liners and didn’t pass but like one blood clot.