Scared beyond words

Haylee
This is my first ever pregnancy. I was so happy and thrilled and bought onesies. I told my family and my SO's family. Everybody's so happy and thrilled and happy tears were shed. We're 7 weeks today. The size of a blueberry, limbs are starting to grow little toes and fingers. The brain is growing more complex. 
But is it? Is my little nugget even growing, developing, thriving? 
Monday, my HcG levels were at 333. They're supposed to double or triple by yesterday. However, it only went up to 346. 
What happens now? I don't get to meet my nugget? I don't get to change it's diaper or sing to it? 
What will the doctor tell me in a couple hours? That my nugget is no more? That I did something wrong? 
What am I even supposed to think right now?