augh I hope it isn't anything to do with the transmission

from what I've heard that's a pretty expensive thing to repair and I'm completely broke right now...
Someone looked at it for me today and drove it around. When he came back he said that he didn't think the clutch was blown, but he said that it feels like it might need to be adjusted since it feels pretty loose. It feels to me like it's not catching real well. I think I might have shaken something loose or out of place because when I took the car out later today I made it buck a little again by accident and it started driving like it used to =/... So maybe I jolted something out of place? When it went all loose, it felt like the clutch pedal was way to easy to push down and i never had to be careful when I shifted gears cause almost no matter what i did it just went right into it with no bucking or squealing...Something's got to be wrong cause I'm still not that good with shifting lol so I know that can't be right that I'm shifting perfect all the time..
I don't know anything about the transmission though...All I know is the clutch puts together and pulls apart the transmission and the engine (right? lol)...