Nervous reck

I been in and out the hospital since Monday, because of bleeding (not heavy) no cramping. The baby's bpm was 80 which is a little low for 6 weeks and my hcg levels are rising but not doubling as they should. Im still bleeding and it's so frustrating. I'm trying to stay positive but I'm soo scared. They keep saying the baby is fine but I can't be to sure.