I am tired all the time, non stop gas, bloating, pain, urinary urgency, and dietary changes. I go to doctors : Colonoscopy good/ mamagram_ good/ bladder - no problems having been looked at with a scope/ b-12 deficiency- yes- taking injection suppliments felt better but I'm still tired/ have allergic and asthmatic conditions/ the docs think I have IBS. Oh yes, and back pain! I have always had a perfectly healthy back. What do you think.. I want to know what's wrong with me. I've been a very healthy, strong, athletic person who is aging really bad an inaapropriately.