You're suffering from a panic attack; you need to calm down. You're focusing on the worst case scenario and how helpless you are in the face of it. But if you're truly helpless, if there's nothing you can do, then you have to let go and wait until you have power to affect the situation again. Do things, even if they're as small and stupid as getting the laundry done or repairing that tear in your pants that has been bothering you forever. Don't waste this month just succumbing to terror.

Anyways, that aside, is this a misdemeanor or a felony? Misdemeanors mean very little in terms of employment, and after a certain amount of time you can get them expunged. Heck, you can even get felonies expunged if they're not too severe (and this one isn't). People who get into bar fights don't have their lives completely ruined. It'll be okay.