I'm sorry to hear that. I've been where I couldn't walk and know how you feel. I had to use a manual chair and walker though. If you don't feel like messing with grocery shopping right now , a lot of stores will fill your list and you just have to pick it up.
My appetite has not returned yet and I do not shop for groceries that often. Coffee is beging to taste good again though. Now I only drink a cup or two of instant coffee where I used to drink a pot of freshly brewed coffee a day.
Had to go out today and ran into a guy with a walker that had a plastic seat on it. Now that is what I needed. Not to worry though as I will be using a wheelchair next week.