Hi there jackie75
Only just seen this - sorry - busy weekend!
For vaginal dryness - if you are taking systemic HRT then the usual advice is it's best to take a medium dose of systemic but then use local oestrogen which targets this area specifically rather than a higher dose of systemic oestrogen. In fact I am very surprised that you were
started on this high dose of 100 mcg at 58 or so, 6 years after menopause and given the 7 days x 100 mg (?oral) utro per month. No wonder you experienced endometiral thickening - although this would not necessarily happen to everyone. It;s a completely different situation to a woman who is still having pretty regular periods and prescribed the same regime and who is producing her own oestrogen as well as a good dose of her own progesterone after ovulation every month.
Dr Currie does not necessarily approve of this unorthodox regime and has commented accordingly. As far as I understood it, this very low dose of progesterone was supposed to be for women who were severely progesterone intolerant rather than the norm - because it is a reduced dose and can cause endometrial hyperplasia as you have found - and has to be done under supervision due to the risks.
If it were me I would want to start with the licensed dose for a few months (if you could manage this) and then see how my endometrium behaved (in terms of bleeding) and then reduce the dose or lengthen the cycle accordingly - depending on the oestrogen dose.
re the capsules - 200 mg used to be available for cyclical HRT and was withdrawn although this dose is still available for vaginal Utrogestan used for fertility. Now the HRT ones are just 100 mg - no applicator because not licensed for vag use in UK ( absurd!). So just poke 'em up with your finger as far as they'll go and it does the job.
Re my cycle - I have been on 50 mcg patch for 10+ years ( recently increased a tiny bit due to also taking testosterone). When I was on a 28 days cycle I was using 11 days progesterone ( then Cyclogest before utrogestan was available for HRT) and stopped getting bleeds. Therefore I knew my lining wasn't building up . After a brief spell on lower dose oestrogen ( 25 mcg) which wasn't enough, I increased back to 50 mcg but knew I could try a longer cycle because of my experience with 28 day cycle. My NHS GP ( gynae specialism) was happy for me to do this. I have since had a couple of scans for one reason or another and the only time it was thicker ( around 7.5 mm I think) was because I was part-way through the cycle - so only to be expected. Scans post-bleed have been around 4.5 which is fine.
The higher the oestrogen dose the more prog you need. Personally I prefer to do the standard course ( ie 12 days) on a longer cycle than fewer days on a monthly or 28 days cycle - since as far as I understand it, the extent to which progesterone protects the endometrium is dose and duration dependent - but is not an exact science. At my age and stage ( mid 60's) the last thing I want to be worrying about is whether my womb lining is getting too thick.
You might find that 50 mcg along with Vagifem does the trick and then you might get away with a longer cycle. It depends on how long you want to be taking HRT. I intend to carry on as long as I can and as long as my health permits and I can cope with still having a bleed and buying/using tampons without publicising the fact!!!
Hope these random thoughts are helpful - it's a bit late and I'm tired now!

Hurdity x