Welcome to MM.
Sorry to hear about your symptoms, they sound terrible. I have never heard of anything quite like that before but others have obviously had similar experiences.
Needless to say, you can't just leave it so how's this for a (hopefully) quick fix solution. You have a Mirena coil for progesterone so why don't you just ask your doctor for a prescription of Oestrogel? As you probably know, it is a oestrogen gel that you rub onto your arms or legs and believe me, it is fantastic stuff.
I would particularly recommend Oestrogel with the Mirena because having had one myself, I found the patches didn't work and I could never get enough oestrogen out of them which led to terrible side effects and endless problems down below - it is a bad idea to have a Mirena coil without adequate oestrogen.
You need to treat the cause, not the symptoms and if they are menopause related, the only way to do that is by taking HRT. It has to be worth a try.