Hi, Thanks for writing in. It is possible that you have a lowered immune status and therefore have got an infection at the operated site even if sufficient care was taken during and after surgery. Please go for an early appointment and consult your surgeon. You might require a swab culture and sensitivity test from the operated area. This will tell if there is an active infection that is causing the low grade fever, redness and swelling. Once the swab test results are ready, your doctor might have to put you on a different antibiotic. Please ding adequate amounts of water and fresh juices to keep yourself hydrated and flush the urinary system, should you have developed any mild urinary tract infection due to catheter insertion at the time of surgery. Please do not worry.