Why Is The Underarm Scar Still Red After Surgery?

Hi, may I answer your health queries right now ? Please type your query here...I hade bothe breast taken off in feb and tissue implants put in and sept 9 had the real implants put in well the two in scar under my arm where the port was for filling expanders was taken out and dissolving stitches are their had the other stictches lou last friday why is my scar under arm red