Chipped tooth, nerve exposed, getting fixed tomorrow. What do I actually have to do in the meantime

Had an insane accident at work in which a nail fired by a nail gun ricocheted and hit me right in the tooth which made it chip off, exposing the nerve.

I have an appointment to get it looked at tomorrow. How actually important is it to like cover it up overnight? It hurts a little bit but not much.

Moreover, can I do anything fun? I have been told I should not eat anything super sugary, drink, or smoke. I’m not like a self medicator or anything but this was a tough day and I want some kind of wind downs. Is it actually that bad to smoke weed just a little bit?