HELP! Ok, my 96 grand am just started making this extremely loud noise that gets even louder the more that I accelerate. It just started when I went over speed bump (I went at a normal, slow rate). My exhaust pipe that is under my car is very low. So I think that it hit badly while going over the speed bump. I looked around but didn't see any disconnections or holes, so I think that it might be broken in the engine. Do any of you have an easy fix idea for this problem? or is it a more serious issue?