A general practitioner is a good place to start. If the symptoms are clear cut, they can work with you right then and there to get you started on a treatment plan, and can recommend a counselor or psychiatrist to discuss more individualized treatment options.

And if the symptoms are not clear cut, they will still give you a recommendation to someone who can identify what is going on and give you the help you need.

The GP also has the advantage of being relatively cheap.