My dad, 75 years old, has infection in his leg/knee being treated with 18 days of antibiotics (ceftriaxone, mid-pic line) in nursing home. His whole leg has been swollen from the infection and surgery since Nov 1st, but the swelling had subsided. Today, his foot of the leg that has the infection has swelled up to 2x his other foot. Doesn t sound good, right? Any ideas?