Is dizziness after tummy tuck normal?

I am 8 days post op and have been extremely nauseous and dizzy since surgery which presists all day. I have been off narcotics since day 3. I did call my surgeons office and spoke with the nurse and she assured me that this is normal because of the narcotics, anesthesia and my small frame may feel these effects for a longer period of time. She suggested taking gravol. I thought that any side effects from medicatiom would be out of my system by now. Is this normal?