I HAVE THiS BUMP LiKE THiNG UNDER MY LiP && iM W0NDERiNG WHAT iT MiGHT BE .?

iTS N0T 0N 0R iN MY LiPS THOUGH
Answers:

any a cold sore, sun blister, or popped blood vessel.

its probably not serious, but if it stays in attendance for a year + you should see a dermatologist

What could this be?

it might be a cold soure

SERIOUS Question?

a pimple,
a mole,
an insect bite,
a sore,
a tumor,
if you're really worried ask your kinfolk doctor.

Why is my friend on her time of year for 9 days?

Canker sore
Cold sores are on your lip and they are similar to blisters
Canker sores are bumps you can receive underneath your lip

Period after birth control pills?

It's probably a canker sore. it should travel away in a light of day or two.
picture: http://www.canker-rid.com/images/canker0...
http://www.nlm.nih.gov/medlineplus/ency/...