[Schwarzeritter]

Zajo,

Honestly, you should get to your destination and have whatever's up inspected and repaired to be absolutely sure.

But!

It really depends, I would at the very least inspect and ensure you have enough fluid in the clutch master reservoir.

Check to see if it's leaking extremely low. Add if so. This is not a fix but temporary aid " if this in fact is the issue ., "

It could be a bad clutch master / slave. It could be that the clutch is not engaging correctly because of a low pressure and thus not operating correctly.

As some here have stated it's possible that clutch and assembly are past due and need to be replaced. It could be that you've linkage issues or worn bushings but all in all it sounds like you'll need to have a shake down.

Hope you get to wherever safely.