There are multiple different options, you don't have to stick with something that is making you miserable.
However you can't just stop the progesterone without having an alternative lined up.
A short term emergency break with just estrogen is usually safe for up to 3 months but beyond this you start to increase your risk of endometrial cancer.
Why not look into some of the synthetic progestin options either oral or the mirena IUS, or alternatively you could take tibolone which is essentially a 3 in one - estrogenic, androgenic and progestogenic actions and often tolerated where progesterone hasn't been.
