Hi again Marji,
I was looking up dosages and 900mg a day should be fine. I found rough dosages on pbcers.org and the lowest dose is still over 500mg for someone weighing only 100lbs. I take 500mg a day and I know that's on the low end. I don't take it for PBC though just because my hep thought I was having cholestasis from my Imuran. I do have bloating sometimes but I think it's purely from diet. That said, celiac disease (CD) is common with AIHers. You may want to speak to the doc about testing you for celiac sprue. There's a blood test they can do but apparently, there are a lot of false negatives. An upper endoscopic biopsy is the gold standard for diagnosis. Some people have CD and some folks have an intolerance to gluten. So you may have a negative celiac test but still need to be gluten free. In any case, don't cut out gluten before the test as it will skew the results.
Are you still on pred? If you're still on pred, are you also on a proton pump inhibitor? The pred will tear up your stomach lining when on it for a long time. That could be your trouble too if you aren't on something like Prevacid, Aciphex or Protonix. They actually decrease acid production and not just coat the stomach for a short time. Prevacid is off patent so you can buy it OTC now. I used ot take it every day until I got off the pred. now I only take it when I'm having digestive issues. Nausea comes and goes and I think that just may be part of having a liver disorder as my labs are perfectly normal.
As per your elastography...YAY! That's cool that you'll be having it. Even if on your bday...it's non-invasive so it'll be an in-n-out procedure!!
Let us know how that goes and and other questions/thoughts you may have,