I'm sorry your body is confusing you so much, Celena. Sometimes it just feels like your body is working against you, and it's sooooo frustrating. I hope this is AF for you, but at the very least you have an appointment next week, right? I hope it gives you the answers you need. Being in limbo is so difficult.
After my loss, I didn't get my period for 11 weeks. My hcg levels had dropped just below 25 by 6 weeks post-m/c, but then they took another 5 weeks to drop to baseline. I'm pretty sure I did O, at 9 weeks, when my hcg was still 10 or so. When I got AF, it was the first week that my levels were at baseline. The whole thing was very frustrating. They did an u/s and saw no retained tissue. After that, no one had any explanations. Just wait until your body works it out. It put me in a bad mood for the whole month of November
Since then, my cycle still hasn't quite gotten back to normal. I'm almost 6 months out, with a 70d cycle, a 50d cycle, and now what will be a 40d cycle. I hope the trend continues.
Good luck with this whole situation. I'm keeping you in my thoughts. Not knowing what's going on or how long it will take to resolve is so hard.