Implantation bleeding??

My period ended on the 27th. Once it's done, it's done until the next month. This morning I woke up, used the restroom, and when I wiped, I had some very light pink blood. I had sex before my period, and on the 30th. We don't use protection, but we use the pull out method.

Is it possible that what I saw this morning was implantation bleeding, or could it have been too early to even have that possibility??

I'd really appreciate some of y'alls input please.

Thank you!