So anxious

I had a positive fit test recently. However I know why it was positive as I had diarrhoea the week before and I have piles. I should have waited until everything settled down before I did the test, but was sick of seeing it on the side in the bathroom. I don't know the result as it just says 'abnormal' on my records. I have been unbelievably stressed about having a colonoscopy. Read all the risks and I am  absolutely terrified of a perforation. I know this is rare, but what if I'm completely healthy, then I am the 1 in a 1000 who's bowel is damaged, when, if I  hadn't had the colonoscopy I would have been fine? I'm not sure I can take this risk. However, now things have got much worse as my Mum is at end of life dementia. I haven't slept for 2 weeks with all the worry. I've cancelled my pre assessment appointment and told them at this time I can't deal with all the worry. I know all the arguments for having the procedure, but still can't face the risk. I have to take one thing at a time and dealing with my Mum's condition is all consuming. Thank you for allowing me this opportunity to vent. My husband is less than useless. He didn't even know what piles were!