This might help...
"The results showed that when progesterone is given to young men, their testosterone levels fell. We know that progesterone is the precursor of testosterone in men. ... However, other research seems to suggest that in men over 55, progesterone supplementation can increase libido."
and.. "Another way progesterone helps reduce the risk of cancer is by
suppressing the growth-promoting effects of estrogen and testosterone on cells that have outlasted their natural lifespan." Seems to be good for cancer but not transitioning.. emmmm
I take Estrodot patches.. When I started I was very happy all the time. But after my GRS, and I stopped HRT for a few months and my moods changed.. I am fine now.. I cannot find anything where it suggest Progesterone enhances any kind of euphoria but perhaps your happiness is down to an increased libido..

or perhaps you are just on a happy time....

TR...