From the moment your water breaks, what should you do? Like shower? Eat food? Grab hospital bag? Is there anything else?

Water breaking is pretty late already so yes, grab your bag, some food, and go! Once your contractions start getting painful, message your gynea (then go for a shower). She will ask you to monitor how far apart they are and tell you when it's time to go to the hospital. Don't forget the things that are packed into the hospital bag at the last minute like your phone charger!