Weird period blood? Is this normal?

This is my first af since july. (I've got pcos and just got back on bc, so this is my 1st induced cycle). I've been spotting for 3 days. I know this is rather gross, but it's the best way I can explain my issue. Only a drop makes it to the pad. What I wipe out has been like chocolate and smells like poop. I've only now had "clumps" show up. Is this normal or should I be worried? Everything glow says about my symptoms (cramping for 2 weeks [14dpo right now], and full on prego symptoms including hightened smell) says something about endometriosis. Anyone else experience this? Any idea if this is ok, or just what's going on?