Alongside Faye at Westminster was Siana Lynch, 26, Evie Niblock, 21, and Zoe Wright, 29, who are all from Ipswich and have the condition.
They were also joined by Monica Thomas of Women’s Health Hope and several other women.
Siana, who was diagnosed last year after suffering 11 years of pain, said the debate was a “massive step in the right direction” towards making change.
“It was reassuring to hear and see not only our local MP passionately fighting by the endometriosis community’s side, for this, but other MPs across the country representing their constituents too,” she added.
Evie was only diagnosed two years ago after experiencing endometriosis symptoms for a decade.
She said she hoped the debate marked “the beginning of a much larger shift”.
“Greater awareness, better access to specialist care, and a more comprehensive approach to treatment are urgently needed,” she explained.
“This must be the start of lasting change.”