Septoplasty ulcer, time and healing recommended, still do not understand outcomes and or normalcy of this?

Underwent a septoplasty on 12/7/17. Surgeon did not have to remove cartilage but was able to reshape and stitch with dissolvable stitches. States one side is healing nicely, the other has an ulcer on the septum. His explanation was not clear but recommended continued flushing and monitoring. I’d imagine this can occur, does the potentiate a perforaration? Is the healing process and flushes all I can do? Took z-pack as prescribed with two days of stent before removal.