10 days late

Well I'm ten days late and I got a very faint line on one test and waited until today to take another and got a negative. I wiped a couple days ago and saw a brownish color but it only happened that morning. Not sure what to think I thought it was implantation bleeding but I'm confused by the very faint line and today negative, I didn't take the test with FMU, I'm gonna take the other test tomorrow morning and see what happens but has this happened to anyone else? What did u do?