Sick for 6 months - no answers - nausea with no known trigger, orange tongue coating and chills

It has been 6 months and I am desperate. I am a 24 year old female with no history of chronic illnesses except for the last year. In the beginning of January 2010, I flew down to Florida. On the plane my ears didn't pop and I got a severe sore throat. I saw a doctor there who gave me some antibiotics. Took them the whole time I was there. Once home I didn't get better. For the next 3 months (beginning of April) I was on 4 more rounds of antibiotics for what was diagnosed as a bad sinus infection. The last three weeks or so of this I was having at least one nose bleed a day, due to how raw my sinuses were at this point. I had never had a sinus infection before in my life. For about a month things returned to normal save for a few small bouts of upset stomach. End of April I got a bladder infection and experienced severe pain in my right mid back. I went to a Patient First who said it was a urinary tract infection and was given more antibiotics. This seemed to help for a week or so and then my world fell apart. On May 15th I started not feeling too good - something off, but didn't really put too much into it. The next day I was very nauseous but went to work thinking it would pass. The Monday morning of May17th, I threw up for the first time in 15 years and had horrible diarrhea. I thought it to be a stomach bug or something and it would pass but it didn't. That following Sunday I went to a Patient First and was told it was gastritis - it would go away on its own but to see my primary care doctor. The next day I saw my doctor who put me on Bactrim to see if this would clear it up. I felt so sick and weak I went to ER where they did a CT scan of my abdomen and nothing remarkable except my mesenteric lymph nodes were reactive so it was diagnosed as mesenteric lymphadenitis, but that it would go away in a few days. It didn't. Ever since then I have battling nausea, inconsistent bowel movements, and chills with NO fever that I can tell. My body temperature goes all over the place. It can go from 96 to 98.9 depending. 98.9 is high for me as I am normally around 97' ish. I have been to a gastroenterologist, my primary and a surgeon numerous times. I have been put on antacids with no change. More antibiotics. I have had a colonoscopy, endoscope, small bowel follow through, ultrasound, abdominal CT at ER, a stool sample to test for a few contributing parasites or bacteria, numerous blood tests ruling out chrones, celiac disease, Addison’s, colitis, H Pyl., Salmonella, Shigella, Campylobacter, Staphylococcus, Giardia, Cryptospor, C diff., Lupus, a stomach emptying test, no known allergies, and no previous health issues except for symptoms related to what we thought/think is hypoglycemia. My liver and kidney function tests have come back normal. My thyroid is fine. I even had the Mirana birth control IUD removed early on in hopes this was messing me up. Nope. The only things that have come back abnormal are as follows: I have unintentionally lost over 30 pounds, I was told I had chronic endometritis and took a small dose of vaginal cream for what I was told was a small overgrowth of bacteria (not yeast) My C-reactive protein was very high at 9.1 in a bracket of 0.08-3. I had a HYDA scan with CCK injection and my ejection fraction was right around 30%. The injection did not make me feel more nauseous or cause pain. I have had only minor discomfort in the gallbladder area. I had my gallbladder removed about a month ago after a lot of soul searching and research as I didn't want to rush into anything. The surgeon said the bile was sludgy and there were signs of inflammation so there is no question it needed to come out and I felt really well for a number of days and started trying to eat normally again (safely of course - no fried foods, no fattening things). The only thing that stayed was the bright orange tongue coating on the back of my tongue and a slight burning in my whole mouth and some mild nausea that I was told to expect for a little bit. I have never had indigestion let alone problems with acid reflux. I have been on prilosec with no change twice and I don't have the tell-tale chest discomfort of acid reflux (both rounds before the surgery). The symptoms have been very consistant in that I feel shaky weak, get the chills in different degrees from just chilly to shaking and goosbumps upon goosebumps and the orange tonue coating no matter what I eat or when. This morning I had the worst bout of nausea and symptoms since the surgery. I got the chills so bad my teeth were chattering but no fever, I felt extreme discomfort/pressure in my stomach/chest area like extreme gas and the nausea hit me like a ton of bricks. I spoke with my surgeon today who told me it doesn't sound like anything related to the gallbladder or the surgery. He was going to send a copy of our conversation to my Dr. and the gastro Dr. saying we needed to regroup to figure this out. I know I have had one heck of a work up and am blessed that my doctors are willing to stick with me but I am at the end of my rope here. I am only 24 years old... Please for the love of God, anyone, please help me.