"Also, I've been pulled over since then. I don't think it was coincidence, I think they tend to be watching me. It was a state trooper both times. "

"I was worried about them coming to my house saying they have a warrant, I've even dreamed of such things happening."

Seriously, weed is the last thing you should be smoking. I dont know how u can handle it as you already sound very very paranoid. First off it WAS a coincidence, there not, i repeat NOT watching you. You got busted with less than 2 Grams, do you really honestly think that they are going to spend the time and money to follow you and have a surveillance team on your ass?Over two grams? Really?
And secondly there not going to get a warrent and kick down your door over TWO GRAMS! They honestly could give a fuck less about a small scale bust. Maybe if they cought you with 14 kilos of cocaine, but they didnt, they caught you with 2 measily grams of pot. Calm down and take a breather, your going to be Fine. What will happen in court (if your public defender isn't a complete moron) is you will get a diversion and have to attend drug awarness classes and probably a drug treatment program where they will piss test you any where from once a week to once a month. The drug treatment program will be out patient so dont worrie you wont e living with the crazies.