How could i make sure i won't be awake during surgery?

Speak with: Your surgeon or anesthesiologist. If it is general anesthesia, you will be asleep. If you have epidural, spinal, or regional anesthesia, you might be a little awake, but even then they will give you enough sedation or amnestics so you won't remember much if anything.

Awareness: Awareness during surgery, or waking up is extremely rare. Anesthesia is very effective and with proper monitoring you will have an uneventful experience.