Hcg levels

Lauren • Wife❤️ Mommy to an 9 year old 👸🏻and 7 year old 🤴🏼Miscarriage 7/3/17...Expecting our rainbow baby boy May 2018🌈

Hey ladies! So I had a chemical pregnancy early last month/ late June. I am pregnant again and super nervous. I had my doctor do an hcg level today and order one for Saturday to make sure it's climbing. Today's level is 172, I'm thinking that's good but does anyone have any knowledge on this? I know the most important part is that they double every 48 hrs, but I'm just trying to gauge what "normal" is. Thanks!