HCG question!

I’m causing myself to be a nervous wreck. I’m 4 weeks 3 days pregnant. 4 days ago I was in the ER for symptoms of kidney stones. They checked my HCG (85.5) got it checked again at my regular doctor and won’t get the results until tomorrow.

I guess what I’m trying to ask is, how low is an hcg level of 85.5 at 4 weeks pregnant? I’m trying not to stress myself out too much I just want to know if this pregnancy (which is my first pregnancy ever) is progressing or not.