hi im a 35yo male with diagnosed ibs, diverticulitus, gastroparesis, and ulnar nerve damage. recently i have had trouble with fainting after severe abdominal pain and i can not empty my bladder. very weak stream and at nite i wake up about every 2 hrs covered head to toe in sweat and very hot for about a minute then urinate a little, then am freezing cold for about a minute then temp seems to regulate. could this be from a damaged vagus nerve? or a new problem? also feel like fainting if i see blood or even violence on tv. ive never been like that before. thank you for your time. i apologize for spelling and grammar.