A few years ago, Jess was working as a lifeguard at Disney World in Florida, living an entirely different life to the one she is living now.
While in America, Jess noticed that her health wasn't 100 per cent - she suffered frequent headaches, migraines and bouts of vomiting - but didn't think it was too serious. So in late 2018, she decided to go travelling with her high-school sweetheart Kilian.
And then Jess' health became worse. The headaches were growing more severe, and she was struggling to hear and see. Soon the decision was made to travel back to Australia.
"When Kilian and I flew home, my parents were there to pick us up from the airport. Coming through the gates, I couldn't see them because my eyesight was that bad. Kilian was behind me, trying to tell me they were in front of us but I struggled to hear him too," Jess said to Mamamia.
Worried about her worsening symptoms, Jess went straight to the hospital where she underwent tests, which revealed she had a mass on her brain.
"I ended up having surgery to get a biopsy of the mass and they put a stent in my skull so that it would drain all the fluid in my brain."
Jess almost convinced herself that it was a non-cancerous mass as she waited for the biopsy results.
But then her surgeon gave her the diagnosis she hadn't given herself permission to think about. It was cancer, specifically glioblastoma - an aggressive type of cancer that can occur in the brain or spinal cord.