got a tick

Hey guys, this is my first post here. I have a 2000 Eclipse GT with 57k. The problem is--when I go from reverse to drive or back to reverse, I have a ticking sound in my left front wheel. Its not a rock (or i cant find it if it is). Does anyone know what it might be? oooooooooo, and also, I have an auto trans and sometimes when it shifts, my rpms will jump up before it shifts.

Bearings... not sure what else it could be... but then again, i wouldnt know unless i heard it