I wouldn't have let the doctor off the hook that easily. Did the doctor give you some cream of some sort or medication? Just a diagnosis?
There are a number of herpes variations including shingles from the chicken pox. Did she explain this? If it is shingles, it is very painful. I have never had it, but have heard it is extremely painful. It affects the nervous system.
Look up shingles and see if this applies to your situation, then find another doctor who can help you and has a better bed side manner.
I recently changed doctors because one had verbal outburst as if she was puking them out...what a difference this new doctor has made. I should have made the change a looong time ago.