I just read something in a medical journal that sounds just like your case. Here's what it had to say:

"Researches have recently discovered a condition which they are calling 'Herer's Syndrome' . This condition is extremely rare and is only maifested in users of marijuana and marijuana derivitives such as hashish. Herer's Syndrome is characterized by a permanent feeling of marijuana intoxication long after any traces of THC (the active ingredient in marijuana) have left the body.

This condition tends to manifest itself when a new, or very moderate user, consumes a very large amount of highly potent marijuana. For reasons yet unknown, the cannabanoid receptors in the brain short circuit and become locked on . The result is that the brain of the user is essentially hard wired to be high at all times.

While many users of marijuana would find the idea of a permanent "high" comperable to finding the Holy Grail, persons afflicted by Herer's Sydrome quickly realize that this is not the case. Being in a permanent state of marijuana intoxication soon begins to radically interfere with their normal lives. The prognosis for those afflicted with Herre's sysndrome are not good. There is no cure and most cases, the effects are so disturbing that the patient's mental health gradually deteriorates resulting in insanity......."

Sorry to be the bearer of bad news man. Hopefully this isn't your problem but I'd suggest going to the docs as soon as possible
Thats amazing.How long does this condition last for?