I suffer with PCOS and ovulate very irregularly, maybe twice or three times a year so I have used Clomid with my first son and again with this pregnancy to help with ovulation.
After my loss I bled for about 3 weeks, then 5 weeks later I had my first 'normal' bleed. After this I saw my FS who gave me the Clomid again and luckily I started another 'normal' bleed on the 1st Sep, 4 weeks or so after the last one. I was very surprised my period came without any induction with the drug Provera 1st Sep and it was that month I conceived the baby I'm carrying now (first try that month!).
I feel very lucky to have gotten pregnant for when my due date came so I can totally relate to your mindset. You will worry more in the new pregnancy believe me. I have now passed, only by a few days mind my dreded 16 weeks time when I had my loss but I guess you just have to get on with it.
I'm also due this time around the same week I delievered my little angel. Crazy how things work out. Good luck and I'm sure you will be blessed with yoru rainbow baby soon!