Do I have a medical malpractice claim for a localized hospital-acquired infection caused by nurse?

I was admitted to GW hospital for scheduled IV iron infusions to treat chronic anemia on Sept 4 & 5, 2012. On Sept 5 my IV line infiltrated with saline following an iron infusion, and I immediately pressed the call button to alert my nurse. After 20 minutes, my forearm by then swollen to the size of a softball, I called the nurse again, and a nurse who was not my assigned nurse came in briefly to stop the saline drip but did not remove the IV line. The infiltration was very painful and I repeatedly called my nurse to have the IV removed; my husband even went to the nurses' station twice to ask for help. An hour and a half later she arrived and removed the IV line, while telling me rudely "you're not the most important patient in the hospital, you know." On Friday Sept 7 I awoke with a fever and clear signs of infection at the infiltrated IV site and went to GW's urgent care clinic where I was diagnosed with thrombophlebitis by ultrasound and given Bactrim DS 2x/day and a topical NSAID.