hello and welcome to hcm forum,
i would be glad to answer your query,
i would like you to know that whenever following the root canal treatment
, pain persists then it clearly states reinfection,
ideally, tooth is retreated or extracted depending upon the current condition of the tooth,
but i would advise you to see an endodontist soon as infection spreads rapidly.
If the pain experienced by you is severe and spontaneous then i would advise you to see a dentist
without delay in the appointment.
I cannot inform you if the current condition of the tooth is severe or better than before until checked clinically,
i hope i answered your query,
i wish you good health.