I had an FDL on 30th Oct. Naval wasn’t receiving enough oxygen and became infected.Metronidazole 500mg x 3 and Co-Amoxiclav 500+125mg x 3 a day. Op to remove naval on 5th Nov. Since been flushing the drain hole with saline,Then packing with iodine soaked swab each day.Worried as when I remove the swab it has grey pus, the hole isn’t getting smaller, been on antibiotics 3 weeks. What’s going to happen when I finish them? Will the hole close itself or more surgery? Grateful for any opinions!