A 4 year old topic, but for others who read this, here's my personal experience.
When in doubt, go to your doctor and take a CT Scan. This with contrast will clearly show any abdominal aorta aneurysm, called AAA.
IF less than 5 centimeter, instant life changes required: no smoking, no acid soft drinks, healthy food and exercise.

If when larger than 5 centimeter, ct-scan more often, and patient and doctor must talk how much longer before surgery is needed, and life saving.
I had 2 evar surgery, a minimal aaa surgery if location of the aaa is near the groin area. Both my surgery had complications, less flood of blood to feet, and 1 foot become numb. Also Staph infection in surgery area. Recovery after this surgery is much faster than a traditional open aaa surgery, but only a option in limited cases.
Open AAA surgery, hospitalization 14 days, recovery will be long (months) took 4 months before I was pain free. Scars are horrible after surgery, but 4-6 months later my chest stomach scar had faded well.
Scar on upper thigh took longer to heal.

Don't be afraid, don't wait!
Go to your hospital once you feel something is wrong internally. CT-Scan will tell if anything is going on.

In my case, my pulse was visible on my stomach when lay down on the bed.