Hi HelenaHelena
Sorry to hear about your lobular carcinoma and I can totally understand your dilemma.
Re the Evorel - if you have a uterus then you will always need to take some kind of progestogen. In the large WHI trial it was the progestogen component of the HRT that led to a greater risk of breast cancer although different type of oestrogen and progestogen were used in the study.
Some studies are showing that using natural (ie the same hormone our body makes) progesterone might associated with fewer breast changes than the synthetic ones so that is an option. However oral progesterone has to be taken in quite large doses to be effective (although can be used vaginally at lower doses).
As coldethyl says you should ask about whether if you were to develop cancer it would be oestrogen positive - in which case it would probably grow faster than if you were not taking HRT.
This is a very specialast area and I know very little about it but sounds like you are under specialist care.
You can reduce your risk of getting breast cancer through lifestyle measures although I don't know whether this is the case if the lobula carcinoma is already there. By these I mean keeping your weight within normal BMI limits and trying to reduce excess if necessary, taking lots of exercise, reducing alcohol to a minimum and eating an extremely healthy and varied diet with lots of fresh unprocessed foods and fruit and veg.
Re how long on HRT - women who reach early menopause are advised to take HRT at least until the natural average age of menopause of 51/52 (to protect heart and bones), but many women experience menopause later than this and so symptoms may not even start past this date. Depending on where you were (what your periods were doing, cycle length etc) before you started HRT - you may still have a few years to go before menopause - or you may have got there. Some women continue to have symptoms for several years even after menopause.
Sorry I can't comment on the sleep issue - for me because HRT stopped sweats and flushes - that enabled a better night's sleep.
I hope you manage to decide what to do for the best - to protect your health as well as quality of life.
Hurdity x