cycle after miscarriage

Hi everyone,
I just want to vent my frustrations. In June, I had a positive test in my hands. We were so happy. And lucky us, I got pregnant right away. But in August, at 10 weeks, I had a miscarriage. Since then, my cycle has been really confusing. Exactly 6 weeks after the miscarriage, I got my period. The following months, it came exactly every 4 weeks, but with 2 days of old blood and spotting beforehand. Last month, I started spotting from day 21 and got my period on day 28. And this month, I started spotting from day 25, but now the period isn't coming through. The spotting stopped yesterday. Today it's minimal again. I find this really annoying. I talked to the doctor's assistant last month about it, and she said the pill could help, but I don't want to go back on that. I stopped taking it 1.5 years ago because it really bothered me. After the miscarriage, my cycle was actually fine again, exactly every 4 weeks, with 2 days of light bleeding and spotting beforehand. But for the past two months, I have no idea what's going on with my body.
Sorry for the long story, but it feels good to get it off my chest.