I just had on three weeks ago. Nothing to eat or drink after midnight the night before. A routine physical at the hospital. Into a gown, into bed and rolled to the procedure room. My doctor, his nurse and the anesthesiologist were in there. My doctor spoke with me a few minutes. They inserted an IV into my hand with the sedatives in it. I was asleep in 30 seconds and woke up in recovery around an hour or two later. Went home and slept some more and ate a light supper.
My throat was sore a few days but I was fine the day after. Yhey did do a fine needle biopsy through the EUS. I was scared too but it will be okay. Not bad at all.
Good luck to you.