Brian -
You're just very bright, and you have a vivid imagination.
Your dream means that you have the ability to harbor vivid thoughts and concerns about your general well-being, and you manifest them in your sleep.
Be thankful you're working with such a good brain.
Allow it to channel the positive thoughts to the rest of your body. You'll be feeling better in the GI tract soon too. Congrats on giving up smoking! Think good thoughts.
Mitch