Nervous about surgery, can't stop crying

I have oral surgery on Monday (implants and bone grafting) and I'm so so nervous I can't even begin to explain. I've been stressed over it for three weeks to the point where I don't even feel like myself anymore and I'm making myself feel physically ill. I have to fly an hour and a half for the surgery and then stay in a hotel far from home for 4 days and flu back and that makes me even more nervous. I'm going to be under IV sedation but I'm terrified for the traveling and recovery. I can't stop picturing the worst possible things that could happen and I've cried three times today alone. Any advice? I really need it. 😢