Hey Man,
I know what you are going through. Have some kind of withdrawal symptoms is come when you are quitting. They last for up to 3 months, but the first week to ten days is the hardest. It can be tough to adapt to a life from being stoned every waking minute to sober every waking minute. This is why I say 3 months, most everything is more normal after 30 days.
I wrote an article here about
Marijuana Withdrawal Symptoms here. Feel free to have a look as it describes this stuff in a lot more detail.
Peace,