Thanks for posting a query in health care magic.
It could be many times possible that there could be an abdomen organ lying exactly above the aorta
in which you could have such kind of pulsations. the same can be confirmed by USG abdomen. If not then probably, it could be due to anxiety
as well. You should give a try to the meds given by your doctor. If it improves with the given meds then it could very well be due to anxiety.
Hope I am able to solve your concerns.
If you need any further details, you can contact me directly by using the below mentioned link:
Wish you good health.
Dr. Srikanth Reddy M.D.