Without wishing to sound totally dim, how many days on Oestrogel only would i use before adding in the 12 days Utrogestan?
Oestrogel is continuous every day, progesterone on cyclical regime is for 10-14 days per month on a regular basis. If you still have a regular cycle you can try to work it in with that so that the withdrawal bleed occurs at the 'scheduled' time, or else just choose a set start date that's easy to remember. I went for the first days of the month (i.e. 1st-10th/14th) - so it's 10-14 on prog + oest and the rest oest only.
I was told that it's a bit like the combined pill and you can mess around with it a bit, timing-wise, if you need to occasionally (e.g. for special occasions, etc) IF your body will play ball with that. I don't tink that it's absolutely set in stone as long as your womb lining is getting the protection which it needs and is having a chance to shed if it needs to (which in turn has a dose relationsip with how much oestogen you're taking - very low dose and you may not get enough build up to 'bleed' much, apparently).
Also, if you react badly to the progeserone element, I was told that you can up the oestrogel dose a bit to compensate just before and during the 10-14 days of taking that.