Jana Pittman has announced that she is pregnant with twins.

The SAS Australia favourite shared the news in a New Idea exclusive on Monday, saying she was concerned about the “logistical nightmare” of being a mum of six kids.

The Olympian-turned-doctor said, “I never thought I’d have six children, I don’t know how we are going to cope. How will we all fit into my car? I can see life is going to be a logistical nightmare.”

Jana fell pregnant soon after SAS Australia wrapped filming, and tried to hide her big news for several weeks.

However, due to her extreme morning sickness, she found the first weeks very difficult.

Recalling the moment she was forced to tell her employers at the hospital about her pregnancy, Jana admitted she’d vomited mid-way through performing a caesarean.

Jana is now 11 weeks along in her pregnancy, and said she won’t be having any more children in the future and is looking forward to spending her life with her “Brady Bunch family”.

Jana and her husband Paul welcomed their first child, a son named Charlie, in December last year.

Paul, who prefers to stay out of the media spotlight, married Jana in a private wedding ceremony just a few months before she gave birth.

Two of Jana’s children, daughters Emily, six, and Jemima, four, were born via IVF and through an anonymous sperm donor.

She also has a 14-year-old son, Cornelis, from her marriage to her first husband and former coach, Chris Rawlinson.

Image credits: Instagram @janapittmanofficial

This article first appeared on Over60.