had my boxster towed tonight

[cardesigner]

This is my first time writing on here.. I hope I am doing it right..

Anyway, I have 1999 boxster with 46k. Everything seemed to be running great until tonight... I was taking off from a light and I heard a loud clunking sound and it continued as I pulled away. I pulled over and shut car off. I started the car up and it sounds fine.. Rev it up and sounds great.. NOT engine then right? I did not try to engage the clutch. scared to do damage. Had it towed away to dealer..

Does anyone have any idea what is wrong? My clutch has not been slipping at all! Clutch pedal has felt a little odd, but no slipping..

help please...