Thanks to all for the replies. This is a difficult matter seeing that this is the first mistake i ever made in my life.
Pulled the head. Saved the gasket as a backup if i need it...never ran engine on it.
Installed new gasket.
Could not find it. Used a very fine and sharp pointed awl, a magnet, and air without success.
Dont think the engine will blow up, but did the best i could.