it might either be a dry socket ( if wound not healed yet)
and possibly pain due to that or...
if other reasons could be
get an OPG , and visit a oral maxillofacial surgeon for consultation if any nerve damage.
in case mandibular nerve canal was close to the root of the tooth that was extracted.
if required he will ask you to take a CBCT scan
Answered2017-05-15 11:36:34
Let others know if this answer was helpful