Unusual spotting... Advice please...

I miscarried at the end of May. I had a D&C at 6 weeks. I had my cycle in June but my July cycle came 4 days early (not normal for me, I'm usually regular with 28 - 29 day cycles), after getting 3 faint positives. I assumed it was a chemical pregnancy. However it was normal for the 4 days I expected AF you be here. Now I've had continuous spotting ( light pink CM every time I wipe only)...

I've never had this after AF and it's been 3 days since AF left. What could this be? No smell, no itching... And I am exhausted and having frequent urination. I didn't think it was possible to be pregnant after AF showed up so i haven't tested since AF showed up.

Anyone else experience anything like this? Any advice? Should i be concerned? I'm TTC and not sure what this means or if that would affect ovulation..