<s>[INST] I passed a kidney stone this morning.  Lots of pain to accomplish this task.  Had the stone identified two weeks ago.  Its been a tough passage.  I thought hat after passing the stone I would be miraculously back on my feet immediately. Instead I have been slightly nauseated, light headed.  VERY tired. Good news is that I have no more pain urinating! [/INST] Hi, Thanks for writing in. The stone while passing through the urinary tract might cause injury to the lining cells and this can result in pain and nausea persisting after the stone is removed. It can also be that some stones might have been too small on earlier scans and have increased in size during last two years. This can cause acute pain since the last two days. It is possible that the pains vary in intensity and severity depending on location and size.  Chat Doctor.  </s>