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.
Chondromalacia also can make your knee joint catch meaning you suddenly have trouble moving it past a certain point, or give way (buckle unexpectedly). These symptoms tend to occur when you bend your knee repeatedly, especially when you go down stairs. In some cases, the painful knee also can appear puffy or swollen. Chondromalacia can cause a creaky sound or grinding sensation when you move your knee. However, creaking sounds during bending do not always mean that cartilage is damaged. Diagnosis