@yoikes Have you ever seen a specialist about this, not just a GP?
It all sounds horrendous but maybe you have not had the best advice available yet from specialist drs?
You will have had progesterone all your life, with periods, so usually it's the synthetic progestins that women can't use. There is this term going around of 'progesterone intolerance', but it's not really that- it's more a sensitivity where it causes bad PMS.
Pill form of hrt is not prescribed by 'in the know' drs now- it is always patches or gel.
If you have been diagnosed with a higher risk of stroke, you should rally try to use hrt and early meno and stroke risk are a bad combination. (Using HRT reduces arterial build up - cause of stroke- by 50%.)
Just for example to give you another side- some of us use progesterone vaginally not orally which reduces a lot of the side effects. In addition, it's possible to use it not every month but once every 2nd or 3rd month, which reduces side effects even more.
Your GP will not prescribe in this way but if you saw a meno specialist, they would.