One day post op and still feeling hungry without much restriction!

Right after surgery your stomach is very swollen and has to heal. Due to this you will not feel restriction until it is healed. This can take a few months. That is why the first few months especially you must measure everything out. I can tell you from experience you will remember the first time you over fill your stomach. I did early out when I misread the size of a hamburger patty I ate. It is an awful feeling.

I'm having my first protein Shake before I get discharged and it's helping me feel not so hungry!

That is good to hear. Best of luck with your recovery.