Do you have a temp?
Do you have angry redness around the incision?
Do you have more pain?
Race, are you on any post operative antibiotic? This is usually done IV in post op, and then a by mouth tablet version when discharged. If not and you are feverish and/or the surgical wound site is red/swollen/ hot..... get to an ER, so they can start an IV drip antibiotic.. right away.