I've had acid reflux for some time now i'm on 20 mg of omeprazole can i still get the symptoms of gerd is seems to come and go recently?

Maybe its not reflux: Lack of response to acid suppression ; antacids raises several possibilities: 1) you have excessive acid production; 2) your reflux is of non-acid material; 3) your esophagus is severely inflamed, infected, or ulcerated; 4) you have heightened esophageal sensitivity; 5) your dose of Omeprazole may be too low; 6) your present symptoms are not reflux-related. Suggest evaluation for diagnosis please.