Hiya, I was just reading your post, and thinking how similar this was to my situation. Last week I had a scan, but I was only 4 weeks pregnant, so there was nothing to see. Then the doctor had to put me in the bracket of poss ectopic. I had bloods taken straight away,and was told to return Saturday just gone to have another test. Last week my hcg levels were 600, and at four weeks they worried me and said this was quite low, but I thought it was ok. Then after a very depressing friday and Saturday they rang me in the afternoon and said that my levels had doubled, that everything should be fine and to arrange another scan for a couple of weeks.
This has put my mind at ease now, and I cannot understand why the same thing hasnt been done for you. The worry for 2 days was enough to bear, but for you it seems you still have a long while to wait before you get the reassurance you need.
I feel for you, you must be going out of your mind. Please try not to worry, I am sure everything will be fine. I think like me it was just too early to see anything.
xxx