Assurance needed!

So my next appt is not until a few weeks and I’m going crazy about how baby is in my belly! I’m 13 weeks and I had one ultrasound when I was 10 weeks (everything was fine — active baby with a HB). But recently, I’ve been worrying every day that I had a missed miscarriage that I may not know about. I read up on the internet that you can still have preg symptoms after a MMC. Need assurance that everything will be okay until next appt! I’m stressing out and I don’t want to because I know baby feels it too 😩😩