I was driving last night and I stalled my car for the first time ever. As I was driving I also noticed I was having trouble shifting gears and the clutch pedal was starting to feel lighter.

This morning the pedal is still really light and I can't get into any gears. If I put my head down by the clutch and press it, I hear a bit of a squelching sound. Is this my master cylinder that's gone on me? Clutch itself is apparently less than a year old, so don't think it's that.

 

Check your brake fluid reservoir and see if it is low, it is more common for the slave cylinder to fail, you lose all the fluid it can cause a noise at the master as it is drawing air as the fluid drains out under the car!

 

Good call! Yeah it's the slave, saw fluid under my car, and mechanic saw it leaking from the slave. Hopefully part comes in tomorrow and I can get it fixed.