I was arrested for the possession of 3 grams of weed and the possession of a pipe. The cop pulled me over because my tag was expired I not being the owner of the vehicle did not know that. In the car at that time I had 3 grams of marijuana and the cop asked if I was in possession of any and I said no this was all after the fact that he asked me to step out of my vehicle. he called for another cop while I waited outside my vehicle. I would like to know what would happen to me and what should i do?