HCG not doubling

M. • S 💙 9.16.19 👼🏼 3.12.22 A 🎀 6.05.23

So I know once you reach a certain level HCG doesn’t rise as rapidly. I’m about 7 weeks and had a couple draws because I had some spotting. It’s not doubling in 96 hours, should I be concerned? My first US in Tuesday, my last pregnancy ended in MMC. I’m so worried.

10/21 - 22218

10/25 - 36095