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.
The piriformis muscle crosses over your hip and causes tightness in the sacroiliac joint. To stretch the hips, lie on your back with your legs extended. Bend your right leg to pull your right knee toward your left chest. Use your hands to pull the leg in a little further.