I had Breast Augmentation surgery 8 days ago. I was sent home from the surgery centre with a 5 day prescription of Cephalexin. 2 days after finishing the perscription, my left breast is sore and slightly red. The doctor removed the stitches today and said the incision has healed nicely but prescribed another 7 days of Cephalexin for the apparent infection in my left breast. I am wondering if this antibiotic is strong enough or if some more aggressive treatment should be used on the infection?