Shifting from 4H to 2H

This morning, I accidentally (not thinking) changed from 4H to 2H without depressing the clutch and I heard a "clunk" noise. Is there anything to be concerned about? Did I damage anything?
Concerned
Kev

 

Its shift on the fly. You dont need to push the clutch in. ONLY when going from 4H to 4L do you need to put the clutch in.

 

What about in an auto where there is no clutch? Just as long as you're not on the accelerator right?

 

You can be on the accelerator it just may not engage till you let off

I let off , shift , reengage

 

the truck will self destruct in 2 days.