Thank Merlin you casted the general counter-spell. Another few minutes being exposed to the fwoopers' song and you surely would have started losing your mind, maybe going so far as to head back to the erumpents on all fours. Fortunately for you, that won't be happening because of the charm you casted. As assumed, it cancels out everything that you had previously casted on yourself. The only thing that remains is the blue flame in the jar and the 'breeze' coming from it.

But what are you going to do about that scorching heat? Have you noticed that your mouth has gone dry in spite of the beads of sweat pouring down the side of your face?

Perhaps the door is more important to you. With each spell that is cast, nothing happens. The door remains just as it is, mocking you. No secret messages reveal themselves. There is no doorknob to be revealed. The unlocking charm had been a waste. Have you looked at the other side of the door? You might find something carved there.

Something, however, rustles in the grass nearby. What was that? ... Seeing nothing coming out at you, there probably is nothing to worry about. It was probably just another streeler. Now back to that door, yes?