Hi...it is usually normal to have pain post root canal treatment !!
But second sitting of RCT means is your treatment complete or not ...if
Complete then there can be pain or irritation which will subside after few days ,till then you can take painkillers.
Not complete then there can be irritation ...plz inform your dr ...n take the prescribed medication.
Next Steps
check whether filling done (temporary or permanent) can sometimes give irritation.
complete full 5 day course of antibiotics and painkillers.
Health Tips
don't touch or fiddle with your tongue as it might cause ulcers .