It is impossible to make a diagnosis, there are so many things
it could be. See a doctor.
It is difficult to make a diagnosis with only some of the symptoms.
However, one illness comes to mind with the symptoms you have
given. Genital Herpes "could"be the cause of the symptoms you
describe. It can cause a lesion anywhere in the area around the
vagina. It can be contracted through traditional sex or oral sex
with someone with a "cold sore". If it is Herpes the symptoms will
usually start approx. two weeks after exposure, initially there
will be an itching or tingling or burning sesation. This is
followed by development of a small cluster of red bumps that itch
(generally the size of a dime to the size of a quarter). After a
few days, the bumps will turn into blisters, then the blisters will
open become painful and gradually dry up and go away in a few days.
If this is your first episode the symptoms will usually last about
12 days and it is frequently accompanied by a low grade fever and
flu-like symptoms. Subsequent outbreaks are less severe and may
only last 4-5 days.You must be seen by a health care provider while
your symptoms are still present for an accurate diagnosis, if a
culture is done, it needs to be done before the blisters dry up.
There is treatment available through your physician depending on
the frequency and severity of your outbreaks, IF it is Herpes.