Anxiety before heartbeat US

I haven’t been able to relax after my BFP. I am so worried that something is going to go wrong and I’ll miscarry. I used a PGS tested good quality embryo and have had good beta numbers so I know the chances are low but I can’t help it. Seeing the gestational sac at 5 weeks helped a little but I cant shake the anxiety of my upcoming heartbeat ultrasound on Wednesday. I have some pregnancy symptoms (tiredness, tender boobs, hungry all the time) but zero nausea or morning sickness at all and I just get nervous that that indicates that something is wrong. I know some women don’t get it at all or some get it later on (I’m only 6w3d) but my mind is going to a dark place 😭