Sorry to hear your story! I'm dealing with a golf-ball sized lump myself at the moment. My band was removed 9-days ago but so far I haven't seen any signs of infection (fever, oozing, etc...) - just the unsightly lump.
Not to sound too paranoid but as a side issue to what you're dealing with, be wary of getting a
Tendon Tear . Two weeks after I had my band installed last year I was using doses of a fluoroquinolone antibiotic as prescribed by my surgeon and my achilles tendon just *exploded* in the middle of a basketball game (I'd already been playing for well over 45 minutes so it wasn't because the muscle hadn't had time to warm up and get stretched out). I had no warning signs at all prior to the injury. It was a complete rupture that required surgery to reattach so I was laid up in the house for a while, in a cast for several more weeks, and it's taken a full year to recover strength and flexibility.
I do heavy weightlifting in the gym as well as being active in several other sports so I'm not a weekend-warrior and could only attribute the rupture to the recent use of antibiotics(?).
So as you're taking that medication you might want to forgo any fast-twitch exercises such as basketball, tennis, etc. until the medicine leaves your system. Good luck!