my desktop icon blew up!

I have this computer 2 weeks. I was clicking around and my desktop icon in Finder (under Places) blew up! I checked the recycle bin, i checked everywhere. How do i get it back? Is it lost for good?
My time machine isnt set up it says.

Help!

what do you mean blew up? was it deleted, moved to another location or the icon was blown up to a large size?

Sounds like you just deleted the alias from the sidebar. Browse to your Home directory and drag the Desktop folder to the sidebar.

You simply removed the Alias in the SideBar by dragging it out.

You can easily get it back by going to Macintosh HD/Users/YOURUSERNAME/ Then click/drag the Desktop folder back to where you want the alias in the SideBar.

OR...

Open the Finder Preference... Click the Sidebar Tab... then tick the "Desktop" check box.

Thanks soo much! i found it by doing what you guys said!
It happens where things blow up on me....

Im still learning the art of the mac