Morning nausea, not pregnant

Patient: I am a 25 year old female who has had chronic nausea for a few years. In the last 6-7 mo’s almost every Morning when I wake up my stomach feels completely empty and I have severe nausea and often vomit. I am not pregnant. I have IBS and GAD. Could my nausea be related to either diagnosis? What could be the cause of this?

Symptoms: Nausea, vomiting

Doctor: