
why can't U have another coil if it helped? The effects do wear off which is why it is recommended to change it after about 5 years, mayB read the 'mirena coil' threads on the Forum. Make notes ;-).
As for being on HRT for a long time, why not? There R 2 many medics telling women that we 'should stop at X age'. Replacement - if that keeps you feeling well then worth a try though it mayB Trial and Error initially.
Do U have a womb which is why women are advised to have some form of progesterone. As oestrogen levels drop the body may become dry: inside and out; scalp, skin, deep in the ears, eyes, vagina, anus; as well as muscles may become lax = aches and pains. Do read the threads on Vaginal Atrophy: 4warned is 4armed.
Let us know how you get on!