Tina and Paul Taylor are sharing their infertility journey. One in four New Zealand couples have issues with infertility, and 30 per cent of those cases are thought to be caused by male factor infertility.

Infertility is a taboo subject for many people, but Tina and Paul Taylor have chosen to go public with their story - by appearing on TV.

The Mangatawhiri couple initially underwent IVF several years ago, resulting first in four embryos and then two healthy children. They then signed up to the TV One documentary show Inconceivable after deciding to try and complete their family using the two extra embryos. Cameras have followed their journey for two years, recording their setbacks, achievements and thoughts along the way.

For the Taylors, children had always been in the plan. They began trying in their early 30s, after travelling and buying a home. They struggled to conceive for a number of years.

"And then someone said, 'You know, why don't you just go to a fertility clinic?'" Tina said.

"I'm always grateful to that one person that told me to ring the clinic and make an appointment because that's got us on the journey."

The couple were shocked to find they were dealing with male factor infertility, after having previously had a sperm test at their GP which came back as normal. That was when they discovered they'd need IVF.

Tina didn't know anyone else going through IVF. She spent a lot of time online researching their options.

"It was quite a lonely time, because you couldn't really talk to people," Tina said.

"I sort of made that decision that I was going to be an advocate for us, and I wanted to go into the [appointments] asking questions."

She began sharing everything she learned in online forums.

The couple received a lot of bad advice from well-meaning people trying to be helpful - things like sitting on ice and 'just relaxing'.

"A lot of those people [Tina] shared it with were in the same boat as me, they just had no idea, no clue that you could access all these resources," Paul said.

When they saw the show being advertised, they decided to take their advocacy role a step further and share their story with the public.

"I wanted to be a part of something that was going to break down barriers and get people talking about infertility," Tina said.

"If we can talk about it and people can get their fertility checked and do things younger that's going to help people."