thanx for the query
first of all if your dentist
has given you option for root canal
therapy or extraction then always go for root canal therapy as its more important to save the tooth rather then loosing your tooth for ever. tooth loss
at your age might create functional loss i.e difficulty in chewing etc. moreover each tooth is as important as any other body part.
now your scenario is little different as you are 8TH month pregnant , try to postpone it till your delivery.
moreover any of the dental procedure which involves local anesthesia
or strong medication (root canal therapy/ extraction )is only done in 2nd TRIMESTER of pregnancy as that is the safe period. some dentist do take risk but it might or might not affect the baby but Why to take risk.
you can take safe medicine
250 MG - BD
TWICE DAILY FOR 5 DAYS after good meals only.
rinse your mouth with warm saline rinses 3-4 times a day (half cup of luke warm water + half tbs of salt to it).
in case pain still persists, visit a dentist and get a pulp caping or pulpotOMY
in single sitting to avoid exertion of treatment under mild anesthesia WITHOUT ANY STRONG MEDICATION , and complete the root canal procedure post delivery.
regards and good luck for new arrival in family . take care and. GOD BLESS.