Positive FIT test has led to an urgent referral. Terrified

I am 32 and have suffered from IBS for a number of years. In the last year, since having my daughter, my symptoms have become much worse. I had blood tests last month and did the FIT test. On Friday the GP rang me as my test had come back with an abnormal result. He said they needed to make an urgent referral for a colonoscopy as they were looking for more sinister causes for the blood such as cancer. I'm so worried that I have bowel cancer. I have had a change in bowel habits in the last month and I've googled too much and scared myself. My family are very positive and are trying to make me think positively but I am just so scared.