How much trouble am i looking at?

Me and a friend got in trouble for tresspassing on railroad property. While the cop was getting our info, he smelled weed in the car. We were then caught with about 2grams and 2 bowls. The cop was kinda cool and said it'll result in either a ticket for tresspassing and a ticket for disorderly conduct OR ticket for trespassing Amanda the whole misdemeanor for small possession. In Pennsylvania what punishment could the misdemeanor lead to and will my parents find out. I'm 19 years old