It's possible that you have a urinary
tract infection, or other type of
infection. Not much to worry about, but
go to a doctor and get it taken care of so
it doesn't worsen.
I know you're young and find the area to
be more embarrassing than older people,
but you really shouldn't let that keep you
from seeing a doctor. Doctor's have seen
everything. They don't judge you or
ridicule you. If your doctor is of the
opposite sex and that embarrasses you, ask
your parents to change to one of your
gender.
I'd tell you how to treat an infection,
but I don't want you waiting or allowing
it to go on, if it didn't work, or if it
is something else other than an
infection.
Ask whatever parent you're most
comfortable with to make a doctor's
appointment and talk to your doctor alone
if you want. You're old enough that a
parent doesn't need to accompany you in,
but I do believe the doctor still has to
notify your parents of diagnosis and
treatment. You're a virgin so you don't
have to worry about std's or getting in
trouble from your parents.
If it is an infection and the doctor gives
you antibiotics, be sure to eat plenty of
yogurt for a few weeks after treatment.
Antibiotics kill all bacteria in your
body, even the beneficial type that you
need for proper digestion and immune
system.
After you talk to your doctor and get a
diagnosis, come back and I may give you
more tips. But for now, I don't want to
give you tips for something you don't
have, causing you to treat the wrong
problem, and allow the real problem to
persist and/or worsen.