I am a 37 year old female. I want to know what are the chances of waking up during anesthesia?
It may happen, but you still will not feel pain. You will only hear things.
The probability of waking up (for a healthy patient) undergoing a routine (non-life-threatening) surgery under general anesthesia is practically zero.
Waking up during anesthesia is extremely rare. There are some instances where it is important to be partially awake in the middle of anesthesia such as during a spinal cord stimulator placement, but that is not typical of most procedures.
Christopher Creighton