I had my 1st hcg level done at 6w+4d and they were 30,000. My 1st ultrasound was at 7w+1d and there was a gestational and yolk sac but no baby or heartbeat yet. I had repeat blood work at 8w and it was 54,400... I know it's going up, but is it going up enough?? It should be doubling every few days but it's less then double 10 days later. Anyone else with a similar experience?