Many thanks Wrensong, I'll have a look for that thread, but tbh, since I stopped/drastically lowered oestrogen I've not had any problems, although I'm also self-treating what I think is a thyroid problem so that may also have had an impact. But my IBS was hellish on high dose oestrogen so that would make some sense.
MaryG - yes, I'd read about the menostar on various US blogs, and some women seem to do really well on it, however, over the last couple of days, I've had an 'experiment' with a 1/4 oestrogen patch so around the same level as menostar, and even at that very low dose I get hypothyroid symptoms, so it's a no-no right now until I get this sorted. It's filed for future use though!