hello & welcome,
If there is pain persisting in the extraction socket even after about a week, then most likely it can be the case of dry socket
In dry socket, generally you get continuous, dull & throbbing pain
with intermittent shoot out may be for a few seconds.
If this is the case with you, then instead of taking pain killers or any other drugs on your own, just make a visit to your dentist
who extracted the tooth & ask to place a soothing agent ( like zinc oxide
eugenol cement) in the extraction socket which will provide you immediate relief from pain even faster than any other painkillers.
Avoid forceful gargling or spitting as it can create more negative pressure in the oral cavity there by hurting the wound.
Use of drugs like metronidazole
( even placed in the socket in the form of ointments) which acts against anaerobic organisms is usually anticipated in such cases.
Antibiotics can only be given by your dentist if he finds the wound infected secondarily.