at my right leg belwo the knee due to fracture , underwent surgery in Jan 18, 2010., no problem for the past 2 years 11 months. a few days back, there is fever and body shivering . taken antibiotic., now the fever and shivering stopped; now there is a swelling at the top of the operation point., and also there is swelling sidewise; there is foreign body ( metal plate and screw) at the fracture point: whether the swelling is due to the infection or any infection at the place?