Oh yeah. That DGP IgG of yours is well over double the normal limit - that is something to take seriously. The DGP IgG is considered to be one of the most specific (to celiac disease) tests out there. A positive result means you have celiac disease 99-100% of the time. (This is where I got my stats: http://www.worldgast..._long_FINAL.pdf) It loos like celiac disease to me too!
Low vitamin levels, as well as low cholesterol and triglycerides are common symptoms of celiac disease. My cholesterol and triglycerides were far enough below normal that my doctor is trying (through diet) to raise it some. LOL
I agree with the others that you need to see a GI specialist and eventually go gluten-free. When you are finally able to go gluten-free (after testing is complete) make sure you give the diet a few months to help. The first year of recovery is full of ups and downs, and many symptoms may not improve for many months.
Welcome to the board.