I am sorry that you are facing this pain.
The affected area being red, hurting is normal in any healing wound as yours. If there is yellowish colored pus oozing from the wound or if there is extreme pain, the wound is infected. Please check for this. If yes, please go to the ER as soon as possible. Augmentin
is a good antibiotic; it should help in clearing the infection away.
Get well soon.