"I have left jobs due to them being not very supportive" she said
"They have done written return to works and assessed my medical capability; you wouldn't do that with someone with cancer or going through the menopause."She said the experience affected her confidence.
"I took a step back post-surgery because I thought I cannot do a senior role any more; I am going to need time off."It was not really the right thing to do because anybody could need time off and they just need support from work."So many people suffer with low self-esteem and feel they cannot put themselves forward for promotion."
According to Endometriosis UK, one in six people with endometriosis has to leave the workplace due to their condition.A spokesperson for the charity said it was "unacceptable" and "vital" government and employers take action to protect those with endometriosis from "unfair practices" in the workplace.
"We hope government will take note of the changes needed to better support those with endometriosis at work - including amendments to the Employment Rights Bill," the said.
Speaking in Parliament on Wednesday night, Ms Furniss said: "Endometriosis should not mean women have to put their careers on hold and leave the jobs they've worked so hard to get.But she hopes to stay alive until her children, both in their early 20s, leave home.
Jeannie is one of about 1,000 people who can’t access a treatment that could extend their lives because it has not been approved for funding on the NHS in England, Wales and Northern Ireland.The drug, called Enhertu, can give patients with a specific type of incurable breast cancer an extra six months to live on average.
The health assessment body, NICE, is the only organisation around the world so far to say no to the drug for this condition. It says that it is too expensive for the NHS to fund.The decision applies in England - but Wales and Northern Ireland will follow this guidance too.