Almula, I think that is a good plan. I hope they will be able to tell you what is causing the swelling and determine a solution for it.

I am many miles away from my transpant center. When I have any unusual symptoms that concern me between appointments, I have called my local doctor's office and asked the receptionist (or nurse) to relay my symptoms to the doctor. (Depending on his response, I might also contact my transplant coordinator) My phone call has often resulted in having labs drawn.

I have located an older discussion about Stomach swelling. Why don't you post your question there, and it will become visible to more people as a trending post.
https://connect.mayoclinic.org/discussion/stomach-swelling-after-liver-transplant-four-years-ago/