Please seek medical attention immediately. Because the pain is spreading up your leg, this infection requires prompt professional evaluation rather than self-treatment. A doctor needs to examine the wound to prevent the infection from spreading further. They may clean the wound and prescribe specific oral antibiotics, such as cephalexin or amoxicillin-clavulanate, or recommend intravenous antibiotics if necessary. Please do not self-medicate with leftover antibiotics, as the wrong medication will not be effective. Visit an urgent care clinic or emergency room today to ensure you get the right care and start healing safely.