Am I crazy please someone help😞

Right I am late for my period by a few days😫 which is really unlike me, I normally get some terrible pain during the time I’m about to start af but nothing this month, This this the same test but different ways I’ve taken them the top pictures are just normal which seem to show nothing but as I went to randomly see the back with my phone flash light I put it on the back to reveal a second line☺️ which of course I’m so happy about I’ve been getting a few pregnancy symptoms but I’m trying so hard not to get so happy about it, I want to know if the test line is always there? Silly question I know but this is killing me not knowing😞