New mom having anxiety

I am a new mom - my son is 19 days old. I am having terrible anxiety about doing anything involving him. My husband works 12 hour days from 10-10 so I'm home alone with my son all day. I can't take him for a walk. I haven't been to the grocery store since he was born because I am nervous about driving with him, being in public with him, and being in public with him on my own. I couldn't even order pizza last night because I was worried about what if I was feeding him when the food arrived or what if he started crying while I was at the door. I know it is irrational but I can't figure out how to get over it.Please help! What did you do? How did you get over it? I would love to hear your experiences. Thank you! via /r/Parenting http://ift.tt/2os7jV7