Hi jedaka

Sorry to hear you're suffering.
If you were still having regular periods when stating HRT and no sign of peri-menopause (ie variability in cycle length from month to month combined with some classic menopausal symptoms, and your age) then you will still likely ovulate as the utrogestan won't be sufficient to suppress ovulation. That being the case then then you could easily have some sort of period monthly, albeit lighter due to the progesterone taken continuously.
You didn't say how many months you've been taking HRT, when you say you haven't had a period since starting HRT but those symptoms sound just like the beginnings of a period to me. In fact I am surprised that you havent had one if it's been several months?
There is no harm in taking progesterone continuously but you just maybe won't know when to expect a period, though if they are still "regular" ie ovulation, then you should get some spotting or period symptoms monthly until ovulation beings to become sporadic.
Glad your investigations have been clear! Try not to worry!
Hurdity x