How much trouble will i get in?

i was arrested recently for petit larceny and criminal possession of a controlled substance 7th degree. i am 20 years old and this is the first time i have ever been in trouble with the law. i just want to get an idea of what might happen to me. i didnt need to pay bail or anything, they just released me after they fingerprinted me and did all the paper work. is jail possible or since its my first time will it most likely not be that bad? any input is greatly appreciated. thanks!