Anxiety through the roof

I'll be 9 weeks tomorrow and I'm so incredibly anxious and scared. Originally my OB wasn't going to check for a heartbeat until almost 13 weeks and I just thought that was way too long to wait to be reassured, so I asked if I could be seen earlier to find a HB. They are able to get me in Thursday next week and I am so afraid I won't hear a heartbeat. I see SO many stories about MMC and I'm so scared it's going to happen. 😔 Trying so hard not to stress.