Nervous wreck

Hey all! I just found out on saturday that im pregnant! Due june 17, 2017. I have a daughter already who is almost three and before having her i miscarried..well...blighted ovum. This time around im so nervous and all i seem to be able to think about is having complications. Im trying so hard to stay positive but the thought of miscarriage is still in the back of my mind and it is driving me insane. I have my first prenatal appt. November 17th where ill be close to ten weeks. What do i do to stop stressing!! I know thats not good for the baby either