What a great answer! Covered the question thoroughly including the process to find out for sure what is happening.  As well, the answer was very clear and focussed to the problem.  Bravo!  I wish all of the medical sites were as good as yours, since when someone gets online to find out answers to a medical problem, in my opinion, the person is probably afraid and it is very helpful to be able to first navigate the site (which is almost literally impossible on other sites), which is easy on yours....very user friendly!  Then to be able to get a thorough answer in a way that is understandable to the layman is very important.  So, in my book, you guys win the prize!  BarbraJean......ineedtogofishing@yahoo.com