R.J.
Neither.
Call and tell your doc your pain meds are making you lightheaded and nauseous and unable to function... and ask to bring them in and trade them for something else.
People have different reactions to pain meds... docs are used to switching things around if you don't have a 'pain killer of choice'. Many will have you bring in the evil scrip, while many others will just get you a different scrip for something else. But it's ALWAYS good business to offer to bring in the icky one, because it negates the 'drug seeking' from being a concern.