Colonoscopy

Feeling very anxious waiting for fast track colonoscopy  after fit test came back positive ,blood was113ug/g ,I've got it in my head that's high .I ve lost 10 lb in weight  and it hurts after I eat ,my tummy bloats. My job is 12 hour shifts and alot of heavy lifting so not sure to go back till after test but don't get sick pay.Trying to stay positive.