cat problems

hello i wrote on hear about 2 weeks ago askin how i could stop my cat from peein every where

now i got her desexed last monday so she has been desexed for a week
she got out last night n this moring her stiches are a bit swolen and red
what could i use? to make sore she doesnt get an infecsion??
thank you

Keep her from going outside again! But first take her back to the vet because it's too late - she probably has an infection and needs to be seen!