hello and welcome ,
After extraction of the tooth it usually takes 7 to 10 days for complete healing and closure of the socket provided there is no super infection Dry socket
Slight swelling and pain is normal for 2 days after extraction but severe swelling of the jaw and pain indicates the developement of the condition called DRY SOCKET.
It is caused due to dislodgment of the blood clot from the extraction socket leading to inflammation of the alveolar bone and delayed healing.
This may lead to pain , fever
, discomfort and swelling of the jaw.
Dry socket is treated by curretting teh scoket to remove the irritants and induce frsh bleeding in the socket and the area is flushes with antiseptic irrigants and then packed with zinc oxide
eugenol dressing which is replaced every 2 to 3 days till the symptoms subside.
Consult a dentist
and get the treatment done , meantime you can do gargling with lukewarm saline water at home .
i hope this helps,