Creeks & rattles

Well, I don't want to sound like mr. paranoia....but today coming home from work i hurt thee loudest rattles throughout my car..i can't really tell if it's front to rear maybe the whole ish. I really thought my floor would just fall out on the next bump. Every bump there was a chime to go with it. Now, whats' the situation. What solves the problem....Suspension? tightening something up underneath....or is this how cars are. This is the first car I have ever owned I'm 18 and it's a 2000 Civic EX. Whats the haps, any comments or suggestions are greatly appreciated. Or do i drive with earplugs to get through life so i don't think so dam much