@DHB Sorry for your loss. Unfortunately there's no rules when it comes to miscarriage. Some people conceive immediately, some people HCG takes longer to come down, some peoples cycle takes a while to regulate.
I miscarried on 1st November, and although I had a period every month since, it took until February for my cycle to regulate (cycles were much shorter in between). I got pregnant in that first regular cycle but have since miscarried again.
My 3 losses to date have all been different themselves. My HCG dropped rapidly in the first 2 but is taking much longer now to drop.
Perhaps once you've had another period, you could start OPKs to check your ovulation thereafter?