digestive issues, parasthesias, bright yellow urine, etc.

I have been working with my military doctors to get a diagnosis for months and to no avail. I had my gall bladder removed in July '09. I started getting sick again in December '09. Some of the symptoms (may not all be related) are, occasional loose stool that is more yellowish than normal that leaves behind a inflamed anus, parasthesias mainly in my left arm and hand but sometimes other places, occasional temporary partial loss of vision in right eye (happened twice, sometimes peripheral, sometimes a dark spot in the middle). Now that my stool has returned to a normal color and consistency I am noticing the quantity is greater and there has been unprocessed food in it. Lately I have developed some very tiny red dots on my arms and abdomen. If I didn't know better it looks like little pinhead dots of blood under the skin like I might expect if I came in contact with fiberglass insulation or something like that. I've had an endoscope and a colonoscopy which revealed diverticulosis but not diverticular disease. They further ruled out Crohn's. I did test positive on a fecal occult blood test early on and was also found to have blastocystosis for which I was prescribed 2250 mg of Flagyl a month ago. MRI and CT of the head are negative for any neurological issues. Can you suggest anything to me that I can ask my doctor? I don't appear jaundice nor am I an pain. I am thinking something liver or pancreas related but I don't know. I am just sick and tired of being sick and tired. Thanks.