I have elevated prolactin, not due to pituitary tumor, will cabergoline enable thyroid and estrogen/progesterone ratio to all become balanced?

Possibly, but...: If Cabergoline shrinks the tumor, you may see some improvement in other hormone function, but it's unlikely. Lost function is probably permanent.

Probably: High prolactin can result from certain medications, narcotics, stress, as well as from pituitary tumors that are too small to see on imaging studies. High prolactin will cause female pituitary hormone levels to become abnormal, resulting in irregular periods or loss of periods. Cabergoline will lower prolactin and improve this imbalance. High prolactin does not typically cause abnormal thyroid.