Hi ! The pain you are experiencing may be due to increase in the acid secretion in your stomach and duodemum. In case you do not get relief with acid reducing drugs, then you should consult your doctor who may suggest you to get your serum amylase
and serum lipase
levels in the blood. You may also be asked to get yourself de-wormed, and if need be, radiological investigations like ultrasound
, etc. Get well soon.