Help!! should I be concern??

I had AF on 9/07 to 9/14 on 9/27 began bleeding light pink color but bleeding increased no clots which is weird since my regular AF is heavy and clots lasting 6-8 days im currently bleeding (4th day) but blood is lighter in color, Can I even consider it to be implantation bleeding?? Has anyone been thru something similar and had a successful pregnancy please help this is killing me I had never experience this before can it be AF twice on same month??