Hcg levels??

Michelle • 6/5/16- Addi Jo was born. 💘

Heyy guys. I'm 4 weeks pregnant today. I have had 3 miscarriages before. I have been getting my HCG levels done every 2 days. I went from a 5 to a 18. Got my results back today and I'm at a 34. 2 away from doubling from 18.. is that okay? I'm nervous. Anybody ever have this problem and go on to having a healthy pregnancy?