Common question about Implantation but please give me your opinion? Thank you!?

I had light brown and once in a while pink and just enought to use 1 liner all day to protect my undies :) so I thought it could be implantation bleeding, but it lasted 5 days and stopped last night? There was no flow, and no bright red and it came and went throughout the day (Noticed more when I wiped) Has anyone else had this and gotten a BFP and if so, how soon? I just didn't know if it could last more than a couple days or if anyone has had this. My perios are usually normal flow and I have to wear tampons, but this is WAY lighter and no flow. Thanks!