Xbox 360 Apocalypse!?

Ok, I have been seeing posts online about xbox noises and stuff and I dont know if Im in the right spot or not to talk about it but whatever. Ok...my xbox was on a shelf today that was shaken and pushed against really hard and I dont know if anything fell on it or not but when I turned on my xbox after the fact, I just noticed something for the first time, it did a "cell phone type vibrate" noise, and to make it even more interesting, I tried to play my DVD...while it was playing I noticed another noise, it sounded like a small whistle for about 5 mins, and I dont hear it now but Im sure its still doing it, what does this mean? Help me please, Im freaking out, I love my 360 but I need to know if its a major problem or not. I cant replace a 350$ system and I shouldnt have too if I paid for one and not two.

Yeah, i know that theres different noises, but damn, I never realized these til tonight and I had it since October of last year...Im freaking out, and I know it cant be the fans...can it? Not whistling like Uncle Tom?