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OP made mistake admitting to dropping the laptop. I would just take it to Apple and see what they say about the problems. Maybe they would fix maybe not.

Millionaire tip of the day: "Never ever, ever admit fault!" ;)

'Did you drop it.... HELL NO!!"
 
Update: So wow, this is wierd, I had an idea, I brought the computer to my bedroom and I noticed how I dropped it yesterday, it dropped to the left. So I dropped it to the right on my soft carpet and bed no more than 6 inches-1ft away. No more noises and track pad is doing better (still pretty uneven though) :D. Almost good as new!

You should drop it again at the exactly same height as your first dropping.
 
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