I Am Being Treated For Cellulitis Following Total Right Knee

I am being treated for cellulitis following total right knee replacement. It is located in the shin-bone area all around my right leg, along with my foot and toes. My leg is severely swollen, has a burning sensation and is warm to the touch. This has somewhat impeded my success in physical therapy. I'm being treated with Clindamycin 300 mg, qid. I've been on the drug since last Wednesday, 5/18 with only minimal change in the appearance. I'm also rubbing essential oils on the area. They are: clove, frankincense, and peppermint which I layer for best results. This has also proven to not have much effect on the cellulitis. I'd like to know if there is any other treatment I should seek, or any other remedies you may know of. I'd appreciate any help you can offer.