If you haven't tried 1/4 tsp baking soda with 2TBSP of apple cider vinegar twice/day with some water give it a try. It's an amazing alkalizer and a powerful antioxidant. Has been known to cure many different ailments, sometimes within a few days. You can read more here: http://www.earthclinic.com/Remedies/acv_baking_soda_cures.html
The gluten, nightshades, and caffeine are definitely not helping as they are acid forming which leads to more illness. Try to minimize these and maximize alkaline foods ,fruits, vegetable etc.