Prolactin is a protein produced by the pituitary gland. Elevated prolactin levels (called hyperprolactinemia) may cause decreased libido (sex drive) and other conditions which are specific more to females than males. Many conditions may alter prolactin secretion. Medications, particularly antipsychotic medications, may cause significant elevations.
Most pituitary hormone production is controlled by signals that come in the form of other hormones. That means the pituitary acts only when it receives a stimulating hormone message from elsewhere in the body. For example, when thyroid activity is low, the hypothalamus, a higher brain center, releases the hormone TRH to stimulate the pituitary to release thyroid-stimulating hormone TSH.
Regarding an answer to your email, more physical studies and tests would be required to completely answer your questions. Also you need to know that any lab reading is only an approximation of the real hormone blood level and may not be a true indication of actual prolactin levels.
The Rife Pituitary Disease frequency set is focused on actual diseases relating to the Pituitary Gland, rather than elevations in hormone productions. However I would say that if this problem continues for some time, then the Pituitary Disease frequency set may become more relevant.