So scared something is wrong!

Becca
At 6 weeks my HCG was over 16,000 and my progesterone was 30. We had our ultrasound when I was 6+3 and the baby was so tiny. Heartbeat was 148.  I'm completely healthy and so is my husband but I can not get the negative thoughts to subside. I read about all these girls that had miscarriages or the baby's heart stopped beating. I fell down the stairs a few nights ago and was pretty bruised. No bleeding or cramping. Just want positive thoughts that the baby is happy and healthy. I'll be 8 weeks this Friday.