Also, if you are in the Observation Group and you start experiencing worsening symptoms that may mean kidney stones (such as abdominal pain and/or blood in the urine) or inflammation of the pancreas (such as abdominal pain, nausea, vomiting, fever, and/or chills), your condition will be evaluated and treated. You will then be offered parathyroid surgery as soon as reasonably possible. At 6-8 weeks after your parathyroid surgery, you will have your second PSG.