Hi moonbeam, I don’t usually post anything on here I just read alot ,but i feel for you and can see you are feeling quite unwell,I can only tell you my experience with hrt and I’ve been using it for 7 years I started out on everol 50 patch , I too had a hysterectomy many years ago and I had awful headaches which were definitely the estrogen, I went back to my doctor and he gave me everol 25 I didn’t cut it and I again had the nagging headaches but after a couple of weeks they went away so my advice would be to go back to the nurse you saw and ask for a lower dose patch and see if it helps if you get headaches again try and wait it out unless unbearable and hopefully it will subside and your body will adjust, every time I changed doses or methods of hrt this happened to me it does go once your body adjusts to using the patch , I switched to gel same equivalent dose to patch and got awful headaches and jitters but after a couple of weeks it slowly faded away , you were on the estrogen pill for a long time so your body now needs to adjust to a different delivery method so please be reassured that things will settle in time I know that’s not easy when you feel so desperate to be well, regarding the estrogen pessary is this vagifem? I was given those and they triggered the most unbelievable migraines in me and awful stomach cramps I can’t use them again it could be something your body adjusts to , I switched to ovestin cream and I faired much better with that there are lots of options for vaginal estrogen so do bring it up with your nurse you don’t need to suffer , very much hoping you are feeling better xx