Miscarriage anxiety

I got my BFP on Tuesday night, bloodwork done on Wednesday and they confirmed my pregnancy yesterday. According to the bloodwork I would be pregnant about 4 weeks (the app says 3.6) so it seems good 😁! However, the miscarriage anxiety just kicked off. I don't get an ultrasound before week 10-12 and I'm already stressing. I was pregnant with twins but only gave birth to one baby. He is the most healthy, funny, gorgeous little boy, but I can't help but think that if it happened with his twin, it could happen again ☹️! Do you have any tricks to help with this constant fear?