What should i do i need fast help!?

i was laying in bed trying to fall asleep, and its 4am here, all of a sudden i heard a crashing sound, kind of like a car rolling over a couple times, theres a row of houses blocking the view from the road down the hill, and my parents window is wide open, and i cant hop in my car and check it out because my car is really loud (performance exhaust) this is really worrying me because it sounded like a crash but there wasent and skidding noise nor did i hear a car prior to the sound, cars are ping by and i dont hear police, was it nothing?