I had this happen where 1 of my incisions looked as though, well it actually was a little infected, probably the same
incision site as you are referring. Mine actually had small amount of pus oozing as well. My recheck was a week or so after noticing a irritation, So around 4 to 4 & half wks Post. The Surgeon said it was probably the suture trying to work itself out. I had already started using Alcohol, Peroxide, Neosporin, and recovering with a bandage.