An advocate for intersex people from Australia has described how having sex in the past was unpleasant for them since they were born with both testicles and a vagina.

At age 16, Blume, a Melbourne resident who had grown up believing they were biologically female, learned from physicians that they were intersex, meaning they were born with a mix of male and female biological features.

Blume explained how they were born with testicles inside their bodies where they believed they should have had uteruses on the I've Got News For You Podcast for News Au.

The advocate now works to raise awareness for the uncommon disease and has revealed how, after choosing not to have their genitalia changed, they had to undergo a procedure termed "dilation" to make sex less painful.

"I haven't had any operations, so I could have had my gonads removed but I decided to keep them because they're just doing their job," they said.

Although they were born without a completely developed vagina, they could have had surgery to create one, but it doesn't really bother them.

"But my doctor recommended for me to go without surgery and to create one for myself using a process called dilation."

They did, and although it wasn't fun, they managed to get through it, and everything turned out okay.

They continued by defining dilation as follows: "Dilation is the process of trying to create a vagina and it's basically like lots of different sticks I would say. You basically just have to put it in and stretch."

Blume claimed that the procedure was complicated, but they seemed satisfied with the outcome and claimed that sex was less painful as a result.

After the procedure, penis-in-vagina intercourse was fine. Blume was able to do hetero-intercourse after dilatation. When they first started dilating, it was initially rather unpleasant.

"I kinda got to this point where I thought 'okay, I'm just gonna let this person that I'm dating finish the job."

Now, everything is totally fine.

I'm assuming it feels the same as a typical female, like I could never tell you exactly but It feels good, that's all I know."

In an effort to lessen the stigma around intersex persons, another model recently disclosed she was born with internal testes.

Supermodel Hanne Gaby Odiele, from Belgium, has walked for Givenchy, Michael Kors, Chanel, Prada, and Marie Claire. She has also been featured in Vogue and Marie Claire.

The 29-year-old, who is married to DJ John Swiatek, revealed that she had Androgen Insensitivity Syndrome (AIS). Women with this condition possess XY chromosomes that are generally seen in men.