Hi allie007
If you do decide to use HRT then it is quite important to find out when your Mirena was fitted, because it is only licensed for use for 4 years to provide endometrial protection (ie your womb lining), whereas it's 5 years for contraception. Despite your high FSH result, you can't be sure you have reached menopause yet because the Mirena will stop periods sometimes long before menopause - and FSH levels vary enormously from day to day and even during the day I gather.
Have a look at this link for information on diagnosis on the main website:
https://www.menopausematters.co.uk/diagnose.phpCyclical changes combined with typical menopausal symptoms ( of flushes and sweats usually), combined with age are the best indicators but without a menstrual cycle (due to the Mirena) it is more difficult. In your case if you are not getting flushes or sweats - maybe you are one of the lucky ones - or maybe they will kick in later if you don't take HRT!
Before the flushes stage - often women find other pms symptoms worsen - usually the mood swings, headaches, irritability, anxiety, fatigue etc - and I agree a low dose oestrogen only HRT might be a good option to start, once you've found out whether you need to replace your Mirena.
All the different oestrogen preparations can be found here:
https://www.menopausematters.co.uk/treatafter.phpMary G has already mentioned oestrogen gel, and I have only ever used patches (Estradot) which I have found excellent (been using them for 11 years!), and there are also tablets. It is a matter of preference and also how well you absorb the oestrogen from the different types. In your position I would start with a low dose for 3 months and see how you feel - and if your symptoms persist then you might want to increase the dose - however it could be that your overall oestrogen levels have not yet dropped enormously so a top-up could do the trick
If you need any more help do please ask.
Hurdity x