A mother from Hertfordshire has created a symptoms diary for bowel cancer which experts believe could save lives.
Beth Purvis, 39, was diagnosed with late-stage bowel cancer two years ago.
Now the mum of two from Bishop's Stortford wants to help more people get an early diagnosis.
Click to watch a report by ITV News Anglia's Elodie Harper
She's spent the past year working on a diary that patients can take to their GP.
Beth went to her GP more than once with symptoms but was told not to worry.
By the time she was finally diagnosed the disease was advanced.
"It's had a huge impact. It's been difficult for the children, they've seen me in hospital and not well at home. "My husband has had to take time out of work to attend hospital appointments and support me. "I think the biggest thing is we don't know quite how to plan for the future because we don't know what future we've got."
Beth's cancer is currently being kept at bay by chemotherapy but living with the constant possibility of its return is deeply stressful.
Spotting cancer early is crucial and to try and save others.
Beth has designed a three-week symptoms diary people can take to their GP appointment.