Mollie was just 13-years-old when she fell pregnant, but feels like a normal mum.

Mollie was just 13 years old when she made a decision that would change her life forever.

The teenager had been living with her boyfriend Oscar’s family for after running away from home at 12 years old, when she started noticing changes in her body.

She describes it as a “relief” to learn that these changes were due to pregnancy.

"It was sort of a relief because I knew finally what was my body was doing... For a couple of weeks I knew I was pregnant, but we were too afraid to get the test done," she says.

Despite her mum and Oscar's dad urging her to terminate, the teen chose to have her baby and raise him with Oscar.

Now, 15 and pregnant with their second child, Mollie featured on SBS's Insight, reflecting on how becoming a teen parent to one-year-old Theodore has made her grow up quickly.

"I feel a lot older than my actual age," she says on the program, where she appeared alongside other teen parents from around Australia.

"I guess I'm so focussed on trying to be mature and act older I feel like I'm not a teenager in a way."

Similarly, her partner Oscar says he feels like just a regular dad.

"We're just a family. We're just a normal family, with the exception that I'm 16 and Mollie's 15 and we have a one-year-old and another one on the way," the 16-year-old says.

But while Mollie and Oscar are focussed on their role as parents, others are more focussed on judging them.

"I get a few dirty looks here and there and a few people mumbling under their breath... it doesn't really phase me."

"Judgemental people are unhappy people. I'm so focused on Theodore that hate doesn't matter really."

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For former teen mum Catie Dale, however, the online bullying she faced was so severe she felt she couldn't return to school after she fell pregnant at 16 years old.

"Everyone in Brisbane sort of knows everyone else, and I pretty quickly became a victim of online bullying," she says.

"It was pretty horrendous, I wanted to go back to school, but I didn't want to face my bullies in person."

Eight years on, Catie says the same bullies still talk about her and her decision to have a baby at 16.

"They say things like 'What's that slut up to these days, I bet she's in a gutter somewhere or on Centrelink'," she says.

"I don't know why, but my life is still a topic of interest to these people."

Catie and Mollie were just two of several teen parents who spoke about the experiences on the TV program.

You can watch Insight: 'What's it like to be a teen parent?' on SBS On Demand.