What should i do if i think i have a surgical wound infection?

See the surgeon: So that the surgical wound can be examined. It may need to be opened in addition to using antimicrobials.

See the doctor: Localized small infections can be rinsed with sterile saline and dressed with a topical antibiotic ointment and covered with a sterile dressing. Deeper more involved infections with extending redness past the immediate margins will likely require a more aggressive approach such as incision and drainage, debridement, and oral antibiotic. Consult with your physician as to what would be best for you.