Check with your web hosting provider. Ask them to show you how to use the "cPanel" (or other interface like this). They can show you how to pull up your stats, which should include a listing of robots/crawlers (includes search engines) who have visited your site, hits/page views from visitors and lots of other great information.
In cPanel, go to "web/ftp stats" and you should have "AW Stats" or Webalizer to look at, or both! IF you do, you can go to their websites for more detailed documentation on how to read your results.