just an update, the nitro hasn't helped at all, however I am only able to apply it when I first wake up (20mins before a bowel movement). The area is soo irritated after a BM that i cannot apply it. Things seem to be getting worse down there, I'm 100% sure the area is infected (lots of itching and a yellow discharge/pus), so going to the walk in clinic on Monday to hopefully get some antibiotics.