I am currently 10dpo. AF is due the 28th. I had some light spotting Tuesday and Wednesday that was a rusty brown color. I'm not sure if it's just some weird mid-cycle bleeding, or possibly implantation. I have some light cramping on my lower right side. But no period symptoms I normally get a few days before AF comes, lower achey back, bloating, mood swings, etc. Could this possibly be implantation bleeding I'm experiencing? Or just a weird cycle? BCP was stopped at the end of May, and we've been trying since June. My cycle is almost always 28 days apart.

including a screenshot of my chart in case it might help.