Dear user, Thanks for using healthcare magic. I had gone through your query and understand your concerns. Don t worry it can happen sometime,it may be dry socket, You should gargle with salt water,and clean the wound,it help wound heal proper, You should take antibiotics and painkiller,and don t be stress, You need to visit your dentist,so he or she assign you proper treatment, wish you good health, Hope I have answered your query. If you have any further questions I will be happy to help . Thanks.