So scared

I'm only 7 wks 4 days. I'm so terrified that this pregnancy will go wrong. I've never had any previous miscarriages, this is my first pregnancy. But in so paranoid. Every little ache and pain and it doesn't help that I'm a nurse, every horrible thing I can think of is constantly in the back of my mind. My MD won't do an US until week 11. I just feel like that's a really long time to wait to find out if your baby has a heart beat or is developing properly. I tried to call to have them move the appointment up but they said that's standard for someone who doesn't have any high risk history. I'm just having a hard time dealing with the anxiety and fears and needed to reach out.