Out of beta hell?

Beta #5 (3 days after Beta #4) was 864 which means the numbers doubled in 2.18 days. We are having an ultrasound on Monday because my beta should be above 1500 and we should be able to see something in there - maybe not a baby yet, but hopefully something. I can't wait to confirm it for real. :-) I hope this is my sticky baby and that we don't have any problems from the slow rising betas that are long-term.