i'm very sorry for your loss
when you say it's taking a lot longer than prior losses, how many days has your loss spanned? With my latest loss, we had a very drawn out process to actually confirm the loss was happening (multiple weeks) and I think the actually loss & getting down to a 0 hcg result took another week or so. My highest level hcg result was around 3700 i think, and growth stopped around 6wks although I didn't miscarry until closer to 9wks.
At a hcg level of 7, I would think you should be below their threshhold for pregnant (usually a 5 or less) pretty soon. I'm sorry it's taken a long time for you...there is a lot of relief just when the process is over and you're on to a new cycle with fresh hope. HUGS