Like ChildofGOD62 had mentioned, since I to have been having the same symptoms, Crohn's Disease is what the doctors believe I have and I'm out of my province currently having tests done regarding that. So it is best to consult with your doctor because it could be anything, and if it is any of the above mentioned specifically, you'll want to be treated as soon as you can.
yes I also experiece these issues and silverfox is right you should consult with a physician. In addition you may want to have them check you for Irritable Bowel Syndrome or Crohn's disease. Hope this helps. Feel better : )
You might want to have a doctor check you for Celiac disease.
Yes, I am experiencing it myself, but it could be due to a number of things. I know what the cause of mine may be, yours may be something different however.