I need some information about the nose and mouth ulcers. I have had the occasional sore in my mouth but did not think of as mouth ulcer that would be concerning. Today my nostril felt sore so had a look. There appears to be what looks like a broken blister (1/4 inch wide) and around it a couple of smaller blisters that are just bubbles for now. Is this the dreaded nose sores or just a silly thing that will be gone tomorrow? Appreciate any answers, thank you!