What you are feeling is probably a superficial abrasion of your throat. That can be very irritating but will spontaneously subside. However, there is the remote possibility of a more serious injury that could result in infection and/or leakage of air and liquid. This is unlikely, in your case, given that a week has passed without your developing fever or other serious signs or symptoms. You should definitely notify the doctor who performed the bronchoscopy, immediately, so that he/she can decide if further investigation is warranted and, if so, with what degree of urgency.