Hi, i have a pulsing sensation in my stomach, right below my belly button. it is keeping me awake. i have had a history with stomach sensitivity to coffee. i had some coffee today. i was wondering if the pulsing is gas bubbles or something more serious? i

Probably: Yes, this can be from gut overactivity stimulated by the coffee. If it persists after no coffee for 13 hours, consider other cause.

Stomach pulse: The stomach pulsation can be caused by hypertension. Do you have high blood pressure? Caffeine can increase heart rate that may also causing the symptoms.

Pulsation: You are young, and it would be unusual for this to an aneurysm. Actually, if you are thin you can feel your Aorta.

Your aorta: Every trim person has a pulse there. Many of us not discover it as adults. Mention it to your physician on your next visit.