You are being treated for heartburn or hiatal hernia, and you feel sudden chest or stomach pain, have difficulty swallowing, are vomiting, or are unable to have a bowel movement or pass gas; you may have a hernia that has become obstructed or strangulated, which are emergencies.
One strong possibility for your symptom is gall bladder stones and cholesterol deposits within the gall bladder which can cause sharp pain. Getting an ultrasound of the upper abdomen done in a walk in clinic or the ER will confirm the diagnosis.
Lightening313199 over a year ago. When I bend down to tie my shoes I have been experiencing spasmatic pains in my abdomen which causes me to straighten back out immediately. The pains actually stop instantly as I sit up straight or stretch in an upright position. The pain is minor and simulates a muscular cramp.