What Causes Discomfort Sensation Under Left Rib Cage?
Pulled muscle or mild hernia with nerve
Detailed Answer:
Hi,
With all the objective evidences supporting that there is no serious issue in your case, I find pulled muscle or mild herniation along with a nerve reasonable enough to support the symptoms you describe. However exploring the area with a laparoscope without objective evidence may not be fool proof. However if a person insists a doctor can do a diagnostic laparoscopy and find if there are other evidences for the cause of feeling or pressure.
It also makes sense to undergo an examination by spine surgeon/Orthopedic surgeon to find if there are trapped nerves in the spine causing similar problems described.
I think you should also need Cognitive therapy for the low mood that you have and that will give you confidence to know the reality. This is extremely important at this stage and should go parallel.
Hope this gives you a direction.