Hi Hurdity
I assumed it was my own period arriving around the 25th of each month, as that's when it kept arriving last Autumn when I didn't take any Utro for 3 months.
Prof Studd did say I could try and sync my own bleed with the withdrawl bleed from Utro, so I would only have the one bleed per month to deal with. I think I tried that back in August, but felt really dreadful, and I think it was a combination of the Utro + my own progesterone giving me a double whammy of misery.
Overall, I DO think I am better. Especially compared to this time last year, which I don't really want to even think back on. In a strange way, the fact I felt so dreadful a week ago, but bounced back and now feeling great has given me a lot of faith/hope. I am really, really hoping that as my own cycle calms down, that these dips will become less severe and further apart. And then, it would be a case of perhaps gradually reducing my oestrogen to see what suited me.
Thank you again for all your input, as ever you are really informative and helpful.