At the age of 29, Emily Morris didn't feel right – but she couldn't quite put her finger on the problem.
Neither could her doctors.
“It was nothing that seemed very sinister – just general 'unwellness'," says Emily.
“I would sometimes get a headache but nothing that paracetamol wouldn't fix – and anyway, I spent most of my days sitting in front of a computer at work so headaches didn't seem that unusual.
“I had general flu like symptoms, which the doctors put down to a virus"
Then, for no apparent reason, her resting heart rate rocketed. A baffled cardiac specialist prescribed medication to bring it down but could find no underlying cause.
When she began to experience a strange smell and taste up to 20 times a day, the next port of call was an ear, nose and throat specialist.
Again, his examination uncovered nothing unusual – but he sent Emily for an MRI scan.
“He said it was quite large and quite aggressive," says Emily. “There's not much more of that appointment I remember, really."
“But I do remember him saying I was to go and see a neurosurgeon very quickly."
Until last month, scans had shown that the remainder of the tumour was inactive. Then came the news that it had started to grow again – and now Emily is once again embarking on a course of chemotherapy.
She is speaking out about her experience in order to help others affected by a brain tumour.
“I live in London and I was treated in various different hospitals but I didn't come across anyone else with a similar diagnosis," she says.
“One day when I was having chemotherapy the first time around, I was chatting to a woman with breast cancer. I told her I had a brain tumour and her jaw hit the floor because I looked so healthy.
Now 31, Emily also wants to show others that life can return to something approaching normal after a brain tumour diagnosis, surgery and treatment.
“In the end, the treatment I had last time was not as scary as I thought it was going to be. I went back to my parents' home a week after brain surgery.
“I coped well with radiotherapy and chemotherapy. I was on Temozolomide for eight months and didn't lose my hair or have any major side effects.
“I was off work for three months – I'm part of the sales team for a lighting manufacturer - and I initially went back part time but then managed to go full-time again.
“Yes, I'm back on chemotherapy now but I picked myself up last time and I'm confident I'll do it again.
“My approach all along has been to take one step at a time - and I have always felt strongly that it's best to be very open and honest about what's happening."
Emily's parents and her two brothers have also been a source of great strength, she says.
“I hope that by talking about what's happening to me I will help other people who have been diagnosed with a brain tumour to know that things can feel positive again."