I am having pain under a Crown that was placed today. Is this normal?

I had a permanent crown placed today. All was fine with the fittings, fit, adjust, fit again, etc. I had absolutely no pain until they placed the crown with the permanent cement on my tooth. It immediately started to hurt and 4 hours later, it still hurts. p.s. I had the temporary for two weeks with no issues except some cold sensitivity.

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