I hope you don't mind me answering from the opposite point of view. I know the effects progesterone has on me and I have my suspicions as to why it hurts me so badly each month, in my case it's due to having a syndrome with hypermobility as one of the symptoms. In other words my soft tissues are too soft and progesterone softens them even more. As a result I feel literally like I'm falling apart and I'm much more likely to dislocate something. I've reflux, my throat is raw and I snore, all only while taking progesterone. My body panics internally and I'm in fight or flight for the duration.
That's enough about me, I wanted to offer the possibility you need those effects of progesterone to loosen your tissues and make you feel relaxed and comfortable, which is what I think might be happening to many women who like the effects. If you like the feeling then you should take it imo, listen to your body. My body is screaming at me not to take it, yours could use a bit extra. There is no denying the effects are quite dramatic and I'm sure the advice is to take it if endometriosis might have spread before the hysterectomy.
I was reading the pre-meno averages for female hormone levels. After conversion to the same scale of ng/ml the ranges were;
Testosterone 0.15 to 0.7
Oestrogen 0.03 to 0.4
Progesterone 0.1 to 25.0
I saw a youtube video of Dr Newson saying women have three times more testosterone than oestrogen.
I was surprised so I googled it and the info is hard to find among the cultural bull of "women have more oestrogen" which leaves the question, compared to what?
You'd assume it's a statement about women, but it's not "Women have more oestrogen than testosterone or progesterone", no, it's actually a statement about men, "Women have more oestrogen than men" is the complete sentence.
That minor ommission of effectively never seeing women as the subject, only the object, means the general belief is that women need massive amounts of oestrogen. But look at the numbers, it's not true.
That's my penny's worth, good luck
P.S. There aren't the same risks associated with utrogestan as the older types anyway, sounds quite safe to me.