From her first period at the age of 11, author Charlene Carr was plunged into a cycle of pain. But it was only many years later, when she was struggling to conceive, that she finally received a diagnosis of endometriosis – a condition in which uterine cells grow in other areas of the body. She discusses how her life has been shaped by the disease, what she wants other women to know about their health, and how she turned her painful experiences into a source of inspiration for her bestselling novels.