Ivy, I really don't know. I am waiting for my appointment at 12 weeks with a sense of excitement and dread. I have no reason to believe that there's anything wrong, and I haven't had a miscarriage before. But I am still scared stiff.
I have no suggestions, other than what you are feeling is completely normal. If you can get through by using relaxation techniques, trying to rest as much as possible and keeping relatively healthy (lol, now to keep my own advice!!! ) then you should get through the wait just fine.
Hang in there - and spend some quality time on BB!!!
All the very best for a very happy and healthy pregnancy.