Anxiety

Hi I have alot of anxiety lately. My husband is going to have a esophagectomy next Friday it 8 to 10 hour sugary and I am very worried he is 71 years old and hs leaky heart values and afib and under weigh he had a feeding tub because he can't eat. There is alot of things that could go wrong and I am really scared and have anxiety. He changed doctor because the first Dr wouldn't do surgery he said it wasn't save and there was no much risks. The new dr said ahe would do it she said there was risks she told him to think about it an get back to her ths was early January then las Thursday she just rang out of the ble and said she csn doo the surgery 13 Feb me and Mt husband were kind of surprised she said that it could have over night to think about it as she had other person waiting for surgery. He decided he want to ho throught with it. I should hope everything turn out good and that he won die or have any complications. I just lost my mam last year don't want to lose my husband.