Engaged or a Fiance --- You could call her a Bride-to-Be as well.
call an immigration lawyer.
A bride.
a single woman with child
She is just another woman.
esposa
A dishonest woman or an untrusted woman or a dishonored woman.
Depending on the country and state, getting married to a woman.
A woman who lives with a man as if they were married but without actually getting married.
No! He's getting married to a woman.
Fiancé is a man who is engaged to be married. Fiancée is a woman who is engaged to be married.
"Mistress" is the term for the girlfriend of a married man.