I know you must be scared. What is your doctors and nurses saying? Follow their recommendations first before anything else. If you were too nervous or shocked in the office to ask then write down your questions and concerns now. Most offices have a 24 hour line that you can call and state your fears and ask questions.
Phone a friend or family member. Dont isolate yourself in this fear, even if they dont fully understand they can be your emotional support. Let them feed you, watch a movie with you, play a game and just talk. If you are spiritual, let them sit and pray with you.
Do deep breathing exercises, cry as needed and talk to your baby. Excessive worry will not help. Stabilize yourself and make those phone calls.