You better hope its in fact just fine--no damage done. Maybe-maybe not. I say drive it for a few days and if no problems--like losing coolant cause the head or intake gasket is seeping-- then celebrate. These newer motors can not be abused as much.
From now on when removing something like a rad cap-place it where you can easily see it. Better yet where you can not miss it--like on your drivers seat-if you sat on it you would know it.--ha ha.
Good chance everything be ok but I seen how problems can grow.
