Hi Tracyx- I had a few months of unusual breakthrough bleeding and was referred for an urgent scan. All ok.
I had been changing my regime a bit due to holidays and it seemed to throw things out ( estraderm 50 mcg patches, 200 mcg Utrogestan 10 days a month )
Went to see Professor of Gynaecology through her menopause clinic and she told me that Utrogestan is notoriously unstable in the body and breakthrough bleeding is exceptionally common on it. You can have no problems for years, then it starts to be erratic. She just said it was the nature of the beast and I shouldn't worry about it. X