People have spoken out about a debilitating and unpredictable condition where they have to "beg" to be taken seriously.
Endometriosis affects one in 10 women and is when tissue similar to the lining of the uterus grows outside the uterus, causing pain and/or infertility. For many, a diagnosis doesn't come for years, with symptoms often being put down to painful periods.
The ECHO previously reported that Becci Morris, from Waterloo, has lived more than half her life with regular excruciating pain and has also been told she is more than likely infertile as a result of endometriosis. The 28-year-old had 30 visits to her GP, A&E and hospital specialists after 15 years of agony.