Stupid question

mamaX2

So I took a first response yesterday morning well it came out negative which I expected but upon curiosity I opened the test. I know that once you do that it's invalid but this morning I was walking past the bathroom trash and I noticed it had a pretty clear second line and I was just wondering if that always happens happens when you open tests because the one I two three days before the one yesterday morning is still a clear no. So when you open up tests does a second line always appear later? The second line DEFINITELY has color and is complete so it doesn't really look like evap