I have several white bumps on my bottom lip, I also have a dry chapped line going through it, my top lip covers this but I'm sure people still notice, I am only 16 years of age and I am really confused, I have not been in any seriouse sexual activity therefor it cannot be anything major, it's really embarrassing, and I noticed this about 3 days ago, I am certain it's not from biting my lip, what could this be?