Thanks for choosing health care magic for posting your query.
I have gone through your question in detail.
The lump like feeling that you are talking about could be a diseased stomach. many times if there is an ulcer in the stomach, it leads to this type of sensation. Or there could be a oesophageal hernia
. Both can be confirmed by getting a OGD endoscopy
One thing is sure, that it cannot be anything serious.
Hope I am able to answer your concerns.
If you have any further query, I would be glad to help you.
In future if you wish to contact me directly, you can use the below mentioned link:
Wish you good health,
Dr. Srikanth Reddy M.D.