High Ana and chronic loose stools

I have had loose stools for the better part of 20 years(always, not just sometimes), and 2 years ago, an ANA reading of 1:1200! Other than this, no symptoms. I have had 2 different colonoscopies and nothing notable and that it was probably IBS. My self treatment is taking psyllium hull powder mixed with apple juice for bulk. This is the ONLY thing in 20 years I have found to help. As long as I take this, my stools are formed and not watery or foul, but without it, and it goes right back to water! The different physicians seem unconcerned and one even told me I drank too much water and that it was an old wives tale that you should drink 8 glasses of water a day! I have given up, but am afraid that I am doing damage to myself if I do have celiac disease. I have no pain, no blood. My digestion had always been somewhat "noisy" in that as my food is being digested, it makes a lot of sounds in the gut. I show no deficiencies in my blood work etc, other than I have a little bone loss, but is probably due to the hysterectomy I had at 40 (10 years ago). I certainly haven't suffered from weight loss problems. I work out regularly, have great energy levels etc. I have a limited health insurance plan and cannot afford expensive tests. Is a false high ANA probable? What would you recommend?