Would ECG + xray of chest and blood tests find aorta anyurism. Pulsating stomoch. I have anxiety an last night was first time to sleep in a week.

No. Physical exam, abdominal ultrasound or ct would define the abdominal aorta or aneurysm. As a young, ? Thin person, aortic pulsation is frequently visible and palpable. .
See long answer. An abdominal aortic aneurysm is a very uncommon occurrence in a 19yr. Old. Blood tests, a chest xray, and an ECG are not the examinations to detect it. If your dr. Is truly concerned, an ultrasound of the abdomen/aorta may be indicated in the correct clinical situation.