Periods or pregnancy

Rafia

When i wiped using a wetwipe..i saw slight blood on it.. my flow hasnt completely started yet..

Is it implantation bleed??? Can i get my implantation bleeding on 14dpo(i.e 28th day) ?? Or is it my periods..??

My follicular study shows i have ovulated on 13th day of my cycle.. today is my 28th day..