What was your doctors rationale for taking you off premarin after 35 yrs and at the age of 80? Risks must outweigh the benefits to withhold a medication or treatment or surgery. And now with all these symptoms and new diagnosis, I think you have a lotof questions to be answered.
Consider a doctor who will agree with premarin for you. Also consider bioidenticals (plant based) estrogen and progesterone by a holistic or integrative doctor or nurse practioner. Ask a Mayo womens health or integrative health specialist.
I find it very concerning you are going through this.