Ovarian cysts can be quite painful for a woman, and are usually caused by genetics and hormonal irregularities. They can also be the result of menstrual issues.
Ovarian cysts often happen during ovulation. A complex cyst is one that my require surgery to have it removed. They are usually not painful, however, they may cause some discomfort.
complex cyst on a ovary can be caused by History of previous ovarian cysts, Irregular menstrual cycles,Increased upper body fat distribution. Also Early menstruation 111yrs infertility. Can be painful.