My symptoms:
Abdomen heartbeat/pain.
When exercising or getting upnout of bed quickly I have pain mostly in my lower abdomen, sometimes just on my lower left abdomen.
I drink plenty of water and eat three healthy meals everyday but always find myself dizzy atleast everyother day.

About me:
Vegetarian; no meat diet
run atleast 1mile once a week
core exercises 2-3X a week
I dont smoke or drink alcohol but am around people who do, daily.

When:
Heartbeat in abdomen - around may (2015)
pain in abdomen and dizziness - july (2015)
Come and go but mostly daily pain or heartbeat
exercise or sudden movement of abdomen makes it worse.

Is it possibly an Abdominal Aortic Aneurysm?
Any other possibilities?