As I've stated, progesterone doesn't agree with me right now, and it may not ever. Maybe it's because my body only accepts it's own pro, as I've used both synthetic (Mirena / nighmare) and biodentical cream. Maybe it's because I'm producing enough of my own, or too much for some reason, at this time. The only reason I'd even consider using pro right now is to assist sleep. Even then I'd use only the tiniest amount of cream (1/4 teaspoon or less), only in the evening, and only once or twice a week. It takes pro a little time to get into your system no matter what kind you use, so be very careful and adjust amount very slowly. Or you could crash like I did. That's another reason I like the biodentical cream; you can adjust your own dosage. And I'd never recommend synthetic hormones, although some seem to do okay with it.
Progesterone is the pregnancy hormone. The whole goal of menopause is to no longer need or produce pro, or to only have very low amounts. As a result, estrogen anf other hormones get lowered too. This adjustment throws all your hormones out of whack, causing wild fluctuations trying to find balance, thus the awful symptoms you're probably having right now.
Pro makes your breasts bigger, makes you fertile, makes you sleepy, slows digestion (so constipation and other digestional factors may play a role. Also, high cortisol can also cause stomach issues). In higher amounts pro can make you very tired, nauseous, lacking motivation, etc. If you're having trouble sleeping, a little (start out very small in amount) progesterone may help you. Another good thing it can do, or so I've read, is reduce eye puffiness.
As for breasts, if pro is making them bigger/heavier and estrogen makes them firmer, then higher pro without enough est would definitely cause sagging.
It's hard to get a gyno to test your hormones, thus the need to pay close attention to symptoms. The reason they don't test is they say that hormones fluctuate so much during this time that no result is reliable. I disagree. If certain hormones get too low it can cause insanity and death, and other problems that need to be addressed. There are other hormones that play into the mix such as cortisol, testosterone, pregnenolone... Testing should be done, but I'm having to play doctor to myself right now, and I'm doing a much better job than the gyno I saw did. Find a good one, if you can.
On the other hand, estrogen plays it's role. Es and Pro balance each other before meno, now it's all chaos. Es makes everything "juicy." It helps your joints move smoothly, keeps your breasts firm, keeps your mood elevated, keep your vagina healthy, keeps your skin from getting dry, keeps your hair growing and healthy, etc. The problem is that there are also "bad estrogens", and your body has to balance that too. It's the bad estrogens that increase cancer risk, as I understand it. So reduce them any way you can, and take DIM! DIM will help with this so much, and will prevent or lessen estrogen dominance!!! (And you'll feel so much better and happier!)
Also, as soon as vaginal dryness or uncomfortable intercourse becomes an issue, start using vaginal estrogen cream and use it for the rest of your life. During this time the vagina can become atrophied, causing scarring, and even causing it to "fall out." This is pretty scary. The way to prevent that is to keep circulation going (with intercourse or with other devices) and keep it moisturized. (Watch Love, Sweat and Tears. Right now it's on Netflix but you may need to search for it).
Right now I'm unable to find a biodentical vaginal cream available by online purchase, so I'm just using the cream I have (which is not designed for that purpose) and coconut oil, but I need to find one, and I may have to find an good Ob/Gyn for this reason. But the regular creams are available online, via Amazon and elsewhere.
The goal with any hormone supplementation, to avoid risks, is to use the smallest amount for the least amount of time. Except for vaginal estrogen cream, which should be used daily from now on, as long as you live.
Additionally, you'll need good nutrition and adequate vitamins. Look for a vitamin that contains everything you need. Including iron, selenium, chromium, copper, potassium iodide (iodine), D-3 (please get enough D-3 or you'll have muscle pain and weight gain, etc), and magnesium. Magnesium is very very important and hard to absorb. For this reason, I recommend taking additional mag, pref in the form of magnesium glycinate. You may have to order this or find in a health store. You'll also benefit by adding additional potassium.
Everyone is different, and some swear by the benefits of progesterone, so it may work for you. If you decide to try it, I recommend never using synthetic pro, only biodentical. And start with the lowest amount, raising slowly. Es and pro can both cause some weight gain, but for me pro caused extreme FAT gain, and all the other problems I've mentioned.
I'm writing all this because the info I've found is either wrong, outdated, or just a bunch of copycat publications. I've been through it the hard way so far. Even in groups for meno, it seems they don't want to share what really helps. But you're gonna need some help. So be ready to have a stash of supplements, at the very least a good vaginal cream, an estrogen supplement and DIM. Try DIM first, buy the kind of DIM with Bioperene, or take it with a meal containing black pepper for best results. And take 200-300 mg daily, no more. Higher doses can cause side effects, and you won't need a high dose for DIM to help you immensely.
The estogen and progesterone pictured are biodentical creams that comes in a pump. These are not the only brands out there, there are plenty of good brands available online or at a health store.