Clarification on Progesterone/Progestin/Prolactin with Use of Trenbolone

Hi guys,

First time poster - (generally active reader on threads though).

I want clarification on the terms progesterone/progestin and prolactin please. I have 2 questions.

I understand progesterone is a hormone and “progestin” is a synthetic hormone that acts as a progesterone hormone, is this correct?

I also want to know how teen affects prolactin levels? I understand how test affects e2 levels due to aramotise enzyme but can’t understand how teen effects prolactin levels, could someone please Kindly explain and confirm the first point as I keep getting confused between the difference between “progesterone” and “progestin”.

Thanks heaps fellas!