I misplaced my iphone. Is there a way to track it's location?

I misplaced my iphone somewhere today. I tried calling to see if it was near me and no success. Can I track it's location? I haven't installed a track app on it. It's an iphone4. I feel stupid!

Are you sure you don't have Find my IPhone installed? Go to iCloud.com and try the find my iPhone app. First locate before sending a sound to it.

Too late now but if you Get it back, download find my iPhone (apple make the app). Try calling it if you have just lost it.