Waiting for colonoscopy

Hi. I’m new to the chat. My mum was diagnosed with bowel cancer 18 months ago and has had chemo and an operation. I gave up work to look after her. She is doing well. I have had diarrhoea, wind and go often. Have been going to the doctors for about 4 years with theses symptoms and was told every time I have IBS. Now I have had the FIT test which came back positive with high blood level. I am having a colonoscopy next Wednesday. And scared. According to google I definitely have cancer. Anyone else had blood after the FIT test please?