Aortic aneurysm anxiety. is this one of the worst health issues? like a timebomb

No,should not: Elective ( means not as in ruptured one ) aortic surgery has excellent result , with very low mortality. Recently more and more cases are being done by endovascular stents with out opening abdomen ( similar to coronary stents) observation for small aneurysms , surgery only if size is increasing, may be causing anxiety.

Serious : But manageable. Get follow up ultrasounds each 6-12 months. No smoking. Control high blood pressure. Walk for exercise. Most easily treated with endografts. Hang in there.