I know where you are coming from, my rheumy said to stop the MTX, the liver doc said stay on it. It is frustrating.
These days, doctors cover their own butt and send us for every little thing to a specialist. It was not like that, when I was younger, the family doctor, pretty much took care of everything. My MIL had a skin cancer removed by the family dr in 1981 and was fine after that.
At one time at my rheumy's office, I told him that my mouth is real dry and that I had mouth sores( I also have Sjogrens), he told me to see a nose, throat and ear specialist, when I said, that my eyes are dry, he said to see the eye doctor. I have high liver enzymes,( which he told me is the lupus attacking the liver), but he still sends me to the liver doc.
That way, they cover their own butt and help the other doctors out, by sending them there.
The only thing you can do, is go see the doctor again ( I know, it costs money) and tell her, that you need to know, what to do and that these two docs need to talk to each other and come up with a solution.
I may have been dealt a bad hand, but at least I'm still playing with a full deck. ( most of the time anyway).