Implantation bleeding??

Kristen
So I am 3days pre AF and I go to rhe bathroom befor bed and rhere is a little bit of pink on the tp. There was no bleedi g all night but when I go to the bathroom there is Red/brownish blood on the tp and it gets alittle heavier so I think im starting AF and I put in a tampon. Well I had the tampon in all day and it looked like only the outside layer was saturated with red/brownish blood. Last night I only had 2quarter sized spots of blood while sleeping. Today I am having light bleeding but is is more brown then red. It is like bright red with brown mixed in if that makes sense. This is not as heavy as my normal period. Couls this be implantation bleeding even though its a little heavier then spotting??? Help!