I get hit with periods of anxiety to Henry. It's not a pleasant feeling to say the least. Meetings of Alcoholics Anonymous help me greatly. Posting here like you did does wonders as well. Good nutrition, exercise, meditation, doing something to distract yourself that doesn't require to much brain power helps to. I don't know if you are a praying person, but it definately works for me. Good that your seeing a doctor.
Hang in there. It will get better.
God bless.