From your description and the location , it does sound like you have
an "Epigastric Hernia
". If you also see a lump in that spot when you
strain, or cough
, that confirms it. It could be a very small defect and
abdominal contents like small portion of the intestine can protrude
through the defect. If the prtrusion stays and if you can't push it back,
then it becomes an emergency situation. That is called as "Strangulated
Hernia" and requires emergency surgery for correction.
If you test yourself as above, you can wait till you see your doctor.
In the mean time avoid heavy lifting etc. You can wear a velcro abdominal
binder for protection.
I wish you well.