HELP! IM FREAKING OUT

Lane
Sooo I went to the doctor today because I'm having cramps. I just found out I'm pregnant yesterday. Turns out I have a cyst on my right ovary and that's more than likely what's causing my cramps. They said it's fine and can't hurt the baby. To be on the safe side, they want me to come back in to test Hcg levels? Mine were 850 today and I'm 4 weeks and 4 days along. Is that normal? I'm so nervous since this is my first pregnancy