Suggest Remedy For Swelling When Having Rheumatoid Arthritis

after being diagnosed with rheumatoid arthritis Sept 2014 and on prednisone, I have a very swollen and painful lower right leg with a specifically painful area in the calf, The rheumatologist ordered an ultrasound which was negative and said I was free to go, but my leg continues to be very painful and is effecting my walking. the swelling is including my foot