I'm scared I have colon cancer

I'm going out of my mind with worry I can't stop crying. I have had bleeding from my bowels for a long time years ago I was told ibs. Recently it's got worse so went back the gp who did a fit test which has come back postive. I got the results weds,hospital phoned me Thursday to book me in for a colonoscopy the following Thursday. Covid nurse phoned me Friday had test Sunday it's now Tuesday and I'm self isolating til Thursday I'm so scared I keep thinking if it is I won't see my kids grow up xxxxx