Nikki Sinclaire, a British member of the European Parliament, on Sunday came out transgender.

In an interview with the UK's The Sun, Sinclaire discussed the decision to undergo gender reassignment surgery over 20 years ago.

“It sounds weird, but I knew something was wrong even then [at the age of 3] – I've always felt I was in the wrong body,” she said. “I remember dressing up as a girl on my first day of school. It then started to happen every day. The other kids knew I was different.”

“After the operation, I developed deep vein thrombosis and was immobile for nearly a year,” she revealed. “I suffered from depression, was on 21 different tablets and felt like I wasn't in control of my own life.”

“Gender re-assignment surgery nearly killed me – but it was something I had to do.”

Sinclaire resigned as party secretary of the conservative UKIP Party after a falling out with leader Nigel Farage. She has since founded the We Demand a Referendum campaign, which seeks a public vote on Britain's membership in the European Union.

“If I hadn't become a woman, I would have led a lonely, neurotic life, forever out of place, endlessly consulting doctors and therapists at public expense. As it is I have a happy, fulfilled achiever and I have repaid, in tax, the cost of my NHS operation many times over,” Sinclaire added.