My stomach has been growling all day and feeling like a wave pool what causes this?

Peristalsis: Increased activity of the smooth muscles of the GI tract. They can be over active for a variety of reasons from viral or bacterial infection to stress.

See your doctor: You may be having problems with your diet. Being on Phentermine may decrease your appetite but you may not be eating properly when on a reduced calorie diet. You listed chocolate under one of your conditions and I am unsure if you eat too much of it or not. Pcod can also cause abdominal discomfort. Anxiety can also cause nervous stomach which may be one of your problems as well.