I fully understand Nelly.
I was the same.
Have faith in the doctors ,they will look after you, they do these every day and please believe that you come through this!
I dont wont that to sound like I am dismissing your fear. I was trembling like a leaf as I went in to mine, the next thing you know I was asking the anaesthetist why I hadn't had the procedure, when in fact I had.
i look back on everything that happened last year and it seems like so so long ago even though other aspects of the year seem like yesterday.

You will be amazed at how "with it" you feel after your procedure

Get as much sleep as possible before you go to hospital cause not only will you be woken up every four hours for observations,the unfamiliar noises will keep you awake.