although I want to laugh.. I wont..
make sure your clutch resevoir is at its fill line.. possibly bleed the system if it's never been done before. my cars clutch system started being stupid after a few years of hard driving- i just bled the system and got my pedal back.
another thing: check your master cylinder to make sure it's not leaking.. check the slave cylinder as well..
another thing: have you recently replaced your clutch? if so- did you install it correctly? ie: torqued all the flywheel bolts correctly, lubed the splines (if necessary in your app.).. etc..
another thing: is it time for a new clutch??
another thing- sometimes the pedal itself will 'squeak'.. spray some silicone on the bushings up under the dash
REMEBER: ALWAYS!!!!!!!! depress the clutch fully to the floor when starting vehicle/switching gears...ALWAYS.
but- if you have to slam the pedal to the floor, and tear carpet behind the pedal like i did.. you might have a problem
...toodles..