Please take a look. Bfp or evap line?

Been trying for a while now and did many different things to help along but the last two months I just decided to take it easy. I did take herbal pills for thyroid and hormones but that's about it.

I just decided to take a test this morning because I've been feeling unwell and have very sore boobs and my period was late by 5 days. Ok yes. I saw the line after a couple min. But my problem is now that I can't see the line at all? (On the test that I did) Is it common for such a faint positive to just dissappear after a few hours? Check out the last pic