Hi Tinacros - the doses of synthetic progesterones cannot be compared either with each other or with utrogestan, which is bio-identical progesterone. The dose is determined by how long they last in the body and the dose needed to protect the endometrium. Yes you may find utrogestan is too much but worth a try? Taken vaginally there are fewer side effects. Yes good idea to go for trandermal if you think you have problems absorbing the tablet. It doesn't matter if you don't bleed on the sequential HRT. If your womb lining is kept thin enough consistently not to bleed then that is a dign that you could go for a longer cycle, although this is tricky with combi packs of tablets! If you had the choice it would be better to go for a longer cycle (eg an extra week of Femoston 1 mg before starting the Femoston/Dydrogesterone tabs) than adding oestrogen to your current Femoston, despite Mary G's experience. This goes against medical advice and is no guanrantee that your womb would also behave like this. Good that your womb lining is OK on your current regime Tinacros but adding oestrogen could well mean the lining would grow like I said.
Sounds like the oestrogel and utrogestan combo might work, but don't rule out taking the utrogestan cyclically if you find the side effects too much.
All the best and hope you manage to find a regime that suits you
Hurdity x