Possibly 6-8dpo

Caught the end of my LH surge a few days ago when I got my opks in the mail, and by now im between 6-8 dpo depending on where I usually am when my LH surge ends and all. Today after having sex (which was not painful or rough by any means, TMI but I was well self-lubricated ya know so he didnt tear me) I went to the bathroom to pee and when I wiped I noticed a little blood. It was like watered down kool-aid, just like pinkish red but mainly clear. Like mainly just pee. I wiped a couple more times and noticed it again, but an hour or so later when I peed again I didn't notice the blood. Could it be implantation bleeding???