Spotting after miscarriage?

Autumn • Mom. Wife. OB Nurse. Wishing for a rainbow 🌈

Hi ladies, I've posted here recently mentioning my miscarriage that occurred August 4th. I found out I was pregnant July 28th so I was still very early. My beta hcg dropped on the 3rd and my OB called it a chemical, mentioning I would probably start bleeding that weekend. I began bleeding the next day on the 4th and continued until the 7th. On the 10th I took a dipstick pregnancy test and an OPK; pregnancy test was faintly positive, OPK was dark, almost positive. I disregarded the OPK thinking it was just picking up hcg. Fast forward to yesterday when I had yet another repeat beta hcg drawn and it had finally dropped to 11. Today I've been cramping and lightly spotting (light brown.) my question is could this spotting potentially be my period, more MC bleeding, or possibly implantation? My OPK and pregnancy test were negative this morning. I'm actually hoping its just a period so I can get back to normal. Any ideas? Has this happened to anyone?