Car problems, did I get hit on monday or is it an isolated defect

Today, I noticed that my right break light on my car is no longer working.
I immediately checked all the indicators,all still work only the right break light is no longer working.
So is it a result of the accident on Monday, did I get hit a little bit or is it just the light itself that's broken down on its own.

I'll try to get to the garage to have them look at it, also need to get to the carwash since the back of the car is still covered in shards of glass, a dried up oily substance and pieces of plastic.

No signs of any physical damage to the car though.