Post wisdom tooth removal. Is this normal?

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I had upper right wisdom tooth removal last week. Following post op instructions. I feel the first and second molar very tight and stiff since day 2 after extraction. It's hitting hard and tight while closing the mouth. I couldn't chew anything even on the opposite site because of this. I am eating only soft foods which are easy to swallow. Is this normal to have tight and hard molars? How to get back to normal?
Anyone had this experience? Please share your inputs.