Infection affected tooth sometimes takes more time to heal so it may be delayed healing.post extraction pain and swelling is common.dry socket usually happens between 2-4 days after extraction.site becomes dry and grey in colour . Underlying bone can also be seen.dry socket is not a severe complication, it gets treated with little intervention.it is just absence of blood clot on site due to various reasons.it will subside in 7-10 days
Next Steps
visit your dentist again.get your condition checked .get a post extraction x-ray also done.if dry socket your dentist will give you dressing which is to be changed every 24 hours
Health Tips
home remedies can be cold compression of socket,warm saline rinses,otc painkiller until you make a visit