Unfortunately, I have had seven surgical procedures in the past 12 years. When I wake up from anesthesia, I am relatively alert when I wake up. In one case, where I had almost gone into a coma before the surgery could begin, they kept me rather sedated for several days. I only remember bits and pieces of those days and that was 12 years ago. For all the other surgeries, I am usually alert and am usually itching. It seems almost every anesthetic causes me to itch. I forewarn the doctors and they usually end up giving me an injection of an antihistamine and that stops the itching.
Also, I will normally develop a headache, not a bad one, something that 2 Tylenol would handle, but you cannot get that because you are getting the heavy duty pain medicine because of the incision. My wife is aware of this and will have some in her purse and will always check with the nurse or the doctor just to be safe. My best advice is to avoid surgery, but that is not always possible or prudent.