Matt,
If you do have lymphedema, I believe there are lymphedema therapists who specialize in treating it, and while they won't be able to "cure" it, the treatment can reduce the swelling and give you some relief. I understand the body has to build new pathways to drain the lymph fluid naturally, and this takes some time (I think Gordon's surgeon said either 1 or 2 years - can't remember!). Let us know what your Dr. thinks the swelling is. Anyway, it sounds like what you're doing right now is helping (and is probably a lot cheaper).
I have to say that all Gordon's doctors thought lymphedema therapy was a waste of time, but they're looking at the situation from a different perspective and don't have to live with the discomfort every day. Anne