Hoping for an answer

My AF is on 10/20, I always get my AF on time b/w 29 to 31 days..

My period is 5 days long.. every time on 3rd day it doesn't bleed and again start bleeding on 4th day..

But this month I got my period on 10/14..

And the same thing is happening like my periods..

As it came early can it be implantation bleeding or is it the same period..

Did any one face the same ???