I lost all my notes after the latest Notes app was automatically updated on my Mac Book Pro. How do I get my saved notes back??????

When I upgraded to OS X 10.9.1 Everything got synced in very well. But a few days later when automatic apdates were completed, all my saved notes were erased(very important personal information and passwords). I couldn't restore them back. I can you (Apple Inc) help me with this problem that you've cuased???? I love your products but I hate it when you loose my information. VERY UNHAPPY.