Did you actually come from a dream? I've never had a wet dream in my life.
Dreams as far as we know are just subconscious "gook". I would try investigating further though if youre interested, ask your subconscious "show me the symbol" or something like that I'm sure conjuring it wouldn't be too difficult then wake yourself up and draw it.
Oh... GOD! Yeah my first thought after waking up from that dream....
Oh... GOD!