Looking for LE therapist in Houston area

HI all - I know I read a while back someone posted they had a great LE therapist in the Houston area. I have seen PTs and OTs that I was referred to and no one seems very knowledgeable in the area. I can't say for sure what I am experiencing but want to be as proactive as possible. I am almost 6 months out from Lumpectomy and 3 months out from radiation. I mostly feel armpit swelling that comes and goes. It went away for about a month but now is back. My oncologist dismisses that it could be lymphedema and maybe she is right but I would like a bit more expertise. I went for a few sessions of lymphatic drainage from a masseuse and she seemed very good and it did seem to help (hence the fact it was gone for a month afterwards). Also, I have an upcoming flight next month and am wondering if I should get a sleeve and I know that is something that needs to be fitted appropriately.