Evap line or faint bfp?

okay so at 6:30 this morning took i hpt. I only looked at it within the time limit and there was a very very very very faint line, it almost looked like an evap line, except it was in the first 3 minutes. im only 8 dpo and and my periods not due til the 18th, so bfp or evap line? also yesterday or the day before i had what i thought was implantatoin bleeding, it was brownish discharge kinda what it looks like right after my period when theres still a little blood in my cm. plus ive been really irritable and lots of tingly crampy pains. ugghh, the 2ww is horrible.