*Abdominal pain and bleeding during preganancy (threatened miscarriage) or history of miscarriages (habitual abortion) *Abdominal pain associated with menstrual periods (dysmenorrhoea) *Absence of menstrual periods when taking oestrogens *Endometriosis *Female infertility *Irregular menstrual bleeding when taking oestrogens *Irregular menstrual cycles *Premenstrual syndrome