Hi....my arm with the fistula has been swelling constantly and has been very painful ever since I had the fistula placement surgery about a month and a half ago? I ve tried ice and heat, but to no avail. I still have like knots underneath the injection sites and my arm is very inflamed all along the length of the entire incision. What can I use (preferably natural) that can take the swelling and pain away?......thanks.