If you are a member of AOPA, contact the legal services and talk to them first thing tomorrow morning. Also, fill out a NASA report IMMEDIATELY. Not the end of the world, but these two steps will likely help if from being a major problem down the road.

NASA safety report. IMMEDIATELY!

AOPA's legal services will save your butt with things like this happen. Until you join an airline with a union, be a member of AOPA just for the legal service.

This could be a potential problem later. Do you really want to have to tell every employer that you ever interview with about your violation?