Implantation Bleeding

Im currently 6 DPO and we had sex on the day I ovulated but not since then. Today and yesterday I’ve been getting very little blood like this on my toilet paper when I wipe. But it’s off and on- not every time I wipe. And there was once yesterday where I got a bit more than this. Period isn’t supposed to start for at least 9 more days. Could this be implantation bleeding?