SEVERE pain 12 months after gynecomastia surgery. Could this mean seroma is infected or developed?

I had gynacomastia surgery in Nov 2015. Surgeon removed liquid from left breast twice after surgery but area became hard and painful. Sometimes I feel like Im dying of pain and cant move left arm and lose sensation from my fingers and left side of chest is really tender. I took a course of antibiotics a few weeks ago for a mouth infection and the pain went away for a week but then returned when antibiotics finished. Could this mean seroma is infected or developed into something else? Pls help