Hey Yalinda. I had a tubal ligation done last year and was told there was no need to stop enbrel or mtx. I had no complications. Now, I didn't run it by my rheumy prior to the surgery (asked my GYN). Perhaps he would have said stop the enbrel. Even so, there were no problems. I believe gallbladder is surgery is laporascopic like a tubal ligation, yes?
One thing I wish I had requested prior to the surgery was an IV of prednisone or something equivalent. I had a major flare after surgery; even the wonderful painkillers they sent me home with couldn't touch the arthrititic pain--which was way worse than the incision pain. Someone told me after the fact that when they've had surgery, they were started on IV prednisone before surgery and it kept the inflammation down to a minimum. You might want to inquire about it.
Best of luck to you!