implantation question

So af isn't supposed to show for another 11 days. Today I went to the bathroom and when I wiped there was a little pink on the toilet paper. Totally out of the norm for me if I was starting early.. normally when I start it's brownish at first and then bright red and back to brown. So I never see pink. Could it be implantation bleeding? When does it normally occur anyways? We haven't really been "trying" cause I kind of gave up on monitoring everything so closely cause it just depressed me each month to not get that bfp. But this has me wondering. It's way too early to test obviously. What do you ladies think?