cookieChick!
I agree with the others...don't stress out too much. It's easier said than done and on the very plus side, if it is AIH, it seems to be super duper early! That is always better for any disease. Stress is no one's friend and even less of a friend to those with autoimmune issues. It can trigger flares.
Does anyone in your family have an autoimmune disorder? Generally, one has a predisposition to autoimmunity issues. You may not have another family member, that you know of, and you may be the first to have developed one. Sometimes people figure out their trigger. In any case, if you are diagnosed with AIH, the trigger doesn't matter.
When will you be having follow up labs done to check your levels again? You should be having a repeat blood test a couple of weeks to a month following the first elevated tests.
If you search my name or Ann's, you'll see lots of old posts with tons of info. Ask any questions you have. The only thing I would advise you to change in your regular behavior is to not consume alcohol until you know what's going on.
And Welcome to HW