Miscarriage common at 11 weeks?


Hi ladies. I’m 11 weeks pregnant with my first baby. No previous pregnancies or miscarriages. At 10 weeks, I had an ultrasound and the baby was looking good with a heartbeat of 159 bpm. I have a month between now and my next appointment and I’m just a nervous wreck. My question is, are miscarriages common at 11 weeks with a confirmed heartbeat? I can’t stop worrying.