What can cause the feeling of pressure in your stomach. ?

Possibilities: include inflammation of your stomach, gallbladder,liver, intestine or spleen. Go see your Dr for a thorough exam and definitive diagnosis. God Bless you! http://www.webmd.com/pain-management/guide/abdominal-pain-causes-treatments http://www.mayoclinic.org/diseases-conditions/gastritis/basics/definition/CON-20021032

Depends: Abdominal distension occurs when substances like air, gas, fluid, feed accumulate in the abdomen causing it to expand. Some people c./o of bloating or fullness. Excessive eating, excessive swallowing of air can cause this. Many other medical conditions can cause this feeling; e.g. Inflammatory bowel disease like Crohns Ulcerative colitis, IBS, Lactose intolerance, Celiac disease, Giardia, etc