Anna Cooper, 31, from near Wrexham in North Wales, has had severe endometriosis since her teens.
The condition - where tissue similar to the lining of the womb grows outside it - has left her with permanent organ damage.
She has had to have 17 operations, including a hysterectomy to remove her womb.
She also has two stomas in place for life because much of her bladder and bowel have had to be removed. She lives with her partner and young daughter.
"The disease controls my social life, my work life and my ability to function every day.
"It is not just a period problem - it is a whole body problem. It ripples through your body," she says.