Blood work?

I know I am not the only one terrified of a mc. However, I have never had one that I am aware of. For some reason I am just so nervous that none of this is real or that it isn't going to last and I am petrified. I don't have my first appointment and ultrasound until 8/9. Should I go see my primary care doc to have my blood taken and check my levels? Is that something that I can request? Should I just calm down and wait?