I just woke up to use the bathroom and i wiped and there was a small about of kind of dark pink/brown blood after one wipe it was clean. So i stuck a tampon in and when i took out the applicator there was a tiny drop of the dark pink/brown mixed with white discharge?? And im having no cramps.

Sidenote: I have endometriosis so i get a hell of a warning when my period is about to start due terrible cramping and then bleeding shortly after the cramps start but im having zero cramps and i had one last night or yesterday either

Im CD 33 according to Glow AF shows tomorrow but it could be anywhere between 1-3 days from now. Can this still be implantation bleeding a day to three days before a period is due?