After a root canal procedure, mild pain or discomfort will be there which will eventually taper in 2 to 3 days for which doctors will put you under pain killers after the procedure.
Next Steps
Please visit your dentist at the earliest if,
1. This pain is similar or more than the one which probably you had before the procedure.
2. You feel the temporary cement which is placed to seal the cavity, hits when you close your mouth
And please make sure with your dentist whether the procedure is completed.