I have an 06' zx3 5-speed and I guess something has gone out in my transmission but I don't know what. I was driving to work yesterday and randomly at a red light my car just wasn't in gear anymore. I didn't hear any noises before it happened. I just tried to shift into to hear at the red light and there was nothing for the shifter to go into. The clutch still has pressure but the stick just moves freely around. The car starts and sounds fine I just can't get it into gear. Is there any common answer as to what the problem is and is it something I could fix on my own or requires me to take it to a shop?