Susie
                    
                    
                    
                    
                    
                    
                    
                        
                        
                        Are you drinking enough fluids?  Your electrolytes may be off.  Have you been having diarrhea or vomiting?  I have this problem a  lot.  When I take calcium every day, it seems to greatly alleviate these symptoms.  Give this a  try.  It may work for you as well.  Hope this helps.