Time has passed and now I think I can very succinctly describe my situation. My best answer to what happened to you is to say: "I have an anxiety disorder; it manifests as a bad stutter and an overwhelming sense of over-stimulation that happens outside my home.
That second issue sounds a little like agoraphobia to me. I will ask Dr. Shoja. I very much want to know how to properly name my condition.
Knowing the proper term(s) makes me feel good and allows me to tell friends the truth.