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Do I have permanent ear damage? - brute force ear guards

I heard the music on an iPod touch with the heads of rock music on the price of brute force (but strong) headset. They come in ears 1 / 4 inches. I heard about 25 minutes, and then declined by 85 percent for another 35 minutes. I can not tell how strong he was by all the background noise over time. Stupid Mistake ... After I took my helmet, I had a headache, pressure in the ears, and a tone. It was 7 hours and is still present. Under the muffled sound of music. Is this permanent? Is there anything I should do? Should I see a doctor? I am very worried!