My husband had similar situation 5 yrs ago from sepsis when he had gallbladder out and colon was cut. Coma, etc. learned to walk again, several operations, etc. 5 months. Many prayers went out for him and he survived and lived 5 yrs and died this Jan 25th, 2013 with cancer all through his body. Doctors say it wasn't due to botched op 5 yrs back but he never was the same after that with depression, mood swings, pains, etc. and I really think he went through so much then that he could not fight and had no resistance to fight off the cancer. He too went through many tests and it took months before they found cancer all over. It boggles my mind to understand why all the tests did not find any of it. When it hit the liver he went quickly. He was a good man and I cry every day wishing for his arms around me. I wish I had given him more hugs, been more patient, etc. He had hospice and they were wonderful. I was his caretaker and with him when he died but I still feel guilty though I know I shouldn't but just that I should have been able to do more. He was 72 as I am. I am in pieces and miss him so. It's so very difficult but let's all try to go forward as much as possible. I'm new here today and it's at least good to know that I am not crazy but have a lot of anxiety just like you all seem to.