Tellurium132

it seems as though your problem is that you have two stuck calipers (front right and rear left), and that's why your pads are gone and you're getting the pulsating in the pedal.

what's happening is that since the calipers are stuck (or close to it) they're constantly pressing the pads against the rotors, which is not only wearing down the pads faster than they should be, but it's also likely to be causing the rotors to warp due to overheating.

replace those two calipers, rotors, and pads whenever you get the chance, and you should be good to go.

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rudler

with your squeaking noise, it's probably something along the power steering system, either the PS pump or the steering rack itself. try to have a local shop check it out and see what's going on there.