Help 1st time mama.

Stephanie • I'm married and blessed with a two rainbow boys! A baby on the way & 3 babies in heaven.
I had my son Saturday morning and he nursed pretty well while in the hospital though I didn't have enough in my boobs to satisfy him. Once we got home he wouldn't nurse and I was forced to give him a bottle. Today I can't get my nipples to do anything. Like I'm dried up.. I hooked up to my pump on full force and nothing came out. What can I do?