Faint line disappeared?

Sara

I was so excited when I saw this faint line this morning! My husband even saw it too! I left it on my night stand and after a couple hours I went back to look at it and it was completely gone. The control line is still dark but the faint line is gone. Anyone ever experienced this? Period due on Friday so still kind of early.

First pic was right after I took it. 😊Second pic is a couple hours later. 😔