Evap line or...?🤔 HELP!!!!

I've been lucky enough to not have had an evap show up before, so I'm absolutely clueless about them. I did some reading online in other groups. I read that evaps are usually grey and you can kinda rub them off with a Qtip. And I also know that you're not supposed to read after the test time frame. Bit I've also red that sometimes the test take awhile to detect HCG if you're testing early. I'm still 7 days out from aunt flows visit. When I took the test, I thought I saw somewhat of a line. Figured my mind was playing tricks on me. Before i took the bathroom trash out, i looked on more time. I tried rubbing it with a Qtip,and i swear it's a purple line,not grey. Thoughts? I also read that evaps are thin,not the same thickness a the control line. This one is.