I've lost a lot of weight (deliberately) and I noticed that one of my cheeks has developed a hollow bit. I checked the inside of my mouth and felt a little lump and when I looked at it in a mirror there's a red spot thing sort of like a blood blister. I don't remember biting my cheek and I'm terrified I've got mouth cancer. I smoke and have done for years and I'm 50. I think I'm going to pass out with fear.
Has anybody had anything like that in their mouth? Please help.