Talk to General Physician on Cellulitis

have cellulitis in left leg shin area, ankle, foot and shin is swollen since 2 weeks, reddish and painful, taking augmentin 1g 2 times, em flox 400mg 1 time, denzen 2 time, for last 2 weeks, swelling reduced only slightly but pain and reddish is still there, how long will it take to heal and do i need other medicine in addition to existing? is this normal ?