Hello, thanks for the query to H.C.M.C.
So intense pain that too in stomach may be due to some acute gastritis
Due to over eating, anxiety
, alcohols ( in excess) tension, this type of disease may occurs where you feel intense pain during walking of talking.
Consult a h physician and get in U/S of whole abdomen to rule out any other disease in other part of stomach.
Pl get in blood examination to rule out any infection.
Till you can relief from some antacid
combined with local anaesthetic
( as oxytacain) but at he advice of some consultant.
Regards. Dr. HET