implantation bleeding?

Lyzette • | Momma of 2 girlies <3 | 20 | Wifey |
I started this light brown bleeding yesterday around 2pm and was very little like in the photo. I had unprotected sex on days Sept 14 , 17 , 21 and 22th my SO finished inside me all those times we made love. Could implantation bleeding be a light brown ? Also my next expected period is October 7th