I have extremely severe pain after a root canal .?

I had a root canal on my top second molar. It never hurt before the root canal and I never had issues with it, but now I have severe pain. Even my tongue touching it lightly hurts and the pain never stops. It keeps me up at night and nothing is helping. Even breathing in air hurts and I need to know wether I should... show more I had a root canal on my top second molar. It never hurt before the root canal and I never had issues with it, but now I have severe pain. Even my tongue touching it lightly hurts and the pain never stops. It keeps me up at night and nothing is helping. Even breathing in air hurts and I need to know wether I should wait it out or not. They didn't give me anything for pain and I didn't have pain in my last root canal so i'm really curious, please answer soon .
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