implantation bleeding 11 days after unprotected sex?

[heythere]

I started my period on the 6th and my cycle is 28 days and is very regular.
I had unprotected sex on the13th of this month and on Friday the 22nd I had some light brown bleeding, which was very very light and lasted throughout the day.

could this be the implantation bleeding or is this too soon?

ps. i have seriously sore boobs too, ergh

 

[Sam's Mum]

It could be! Implantation is usually about 7-10 days after ovulation. Fingers crossed for you!