A woman who is not sexually/physically attracted to men, but is sexually/physically attracted to women, is a lesbian.
If you are a lesbian, nothing can make you "not a lesbian."
Do you mean a lesbian? A lesbian is a woman(or girl) who likes another woman(or girl!).
this makes you sound desperate...
If she eats pussy...she is a lesbian (or bisexual).
if your a girl and you like girls that makes you a lesbian
can get sex with a woman
A woman is any female. A lesbian is a certain type of female that is attracted to other females.
A lesbian mistress is a woman who is involved sexually with another woman who is in a relationship. A mistress, in general, is the "other woman" that someone, man or woman, is cheating on their partner with.
what
There really isn't any way to define anyone in that way. It's like asking what is funny or what is "normal." A woman who is attracted to other women but (usually) not men, is a lesbian. Homosexual women are called lesbians and homosexual men are called gay men.
Woman-to-woman will not result in pregnancy.
If you are a woman and you prefer to have sex with other women, then you are a lesbian. If you are a woman and have sex with men and women then you are bi-sexual. Being gay means that you have sex with someone of the same gender as yourself. Being a lesbian means that you are a woman that has sex with only women.