Gallbladder removal and pre op exams?

I had my first gallbladder attack two weeks ago. Ever since I've completely avoided eating fats and dairy products. Two days ago I had skim milk and it had a bad effect on me. A week ago the surgeon ran some bloodwork exams. I saw him this morning and he said the blood work was normal, my ALT and AST levels were back to normal. So I've been scheduled for surgery for this Thurs (in two days). I asked about pre op exams and he said "you are young and healthy and don't need a medical clearance". I've had asthma for years and I suffer from GERD once in a while. I also suffer from migraines. I saw my neurologist and she said everything was good, my migraines are under control. Should I be worried? I thought chest xrays and ekgs etc were necessary before surgery. Should I see a pulmonologist?