Lisa, I hear you on the knotted stomach - worry has so often done that to me, as it does to many, many people. But postmenopause I find I cope better, so that situations that had an extreme effect in the past are now easier to take in my stride.
I had no access to MM during peri & didn't know anyone else going through menopause, which I found a very difficult, isolating & frightening time. Things that helped me most were the support of my partner, learning how & setting aside a little time to meditate daily, a few months of counselling with a mindfulness oriented counsellor, getting out for walks & cycling when energy allowed, resting when I could to compensate a little for the relentless insomnia, learning as much as I could about what happens to us in menopause for reassurance & changing the way I ate to stabilise blood sugar. I found I could no longer get by on a predominantly vegetarian diet as I had for some years & had to ensure I ate a good portion of protein with every meal, together with the complex carbs & wide range of fruit & veg I'd already habitually eaten. I also found I couldn't go more than 4 hours without eating & exercising on empty became an absolute no-no.
It needed a multi-pronged approach, but all those strategies helped me get through the worst & I've mentioned them not to be prescriptive, but because sometimes a tiny snippet of info or detail from someone else's experience can help turn a life around. With the support of your doctors, your partner & if you want it, the forum, you will get there too.
Try to be as kind to yourself as you would to a friend & remember that none of what happens to us at this life stage is our fault.
Wx