When someone consumes the active ingredients that are concentrated in high quality herb, the cerebral effects merely enhance the current mindstate of the person partaking.

Having said this, you probably are just an extremely paranoid person, you smoked, it enhanced your paranoia, you freaked cause you've never been this paranoid, and now you're blaming it on the drug.

If you can't be chill my friend, then pot is not for you. For the rest of us, it helps us with many things such as pain, nausea, ADD, etc.

Sorry man, you just gotta not worry so much...