It's been 5 months since my nose surgery. Donor ribs, silicone, and ear cartilage were used, and my nasal septum was lengthened. The mucous membrane has been exposed like that for a few weeks now, and it looks white and it hurts when I touch it with a cotton swab. What should I do? In this case, do I have to have surgery? And what should I do as first aid before going to the surgery hospital...?