My last pregnancy beta was almost 6,000 at 5 weeks, 6 days. I don't know how high it got to before I miscarried. So 470 is good with me for a week after a D&C, since I thought it would be a lot higher still. I go back in two week for another hCG beta.
My pregnancy betas went up so quick.
I'm not sure I trust betas equalling a healthy pregnancy. Mine were great, even better than average. And I have nothing to show for it.