Does the stomach pain caused by my GERD go away after having a nissen fundoplication?

GERD usually ... ... Causes esophageal pain (heartburn) and not stomach pain ... If stomach pain, then gerd may not be cause, and fundoplication may not fix this stomach pain.
It should. Prior to performing a fundoplication, i always have my patients undergo a 24-hr pH test. This will objectively measure the severity of your gerd and allow us to correlate your pain episodes with your reflux; this will help predict your response to surgery. Keep in mind that most people with gerd do not need surgery; this disease is usually best managed non-surgically.