hello i have read your query.it can be an alveolar osteitis (dry socket).This can lead to infection and severe pain that can last for five or six days. You can take a nonsteroidal anti-inflammatory drug (NSAID), aceclofenac plus paracetamol,to ease the discomfort. you have to visit a dentist dentist will clean the tooth socket, removing any debris from the hole, and then fill the socket with a medicated dressing or a special paste to promote healing. You ll probably have to come back to the dentist s office every day for a dressing change until the socket starts to heal and your pain lessens. antibiotics can be taken to prevent the socket from becoming infected. rinse with salt water or a good mouthwash every day. if you have any oral habit specially smoking. stop it. don worry it ll be fine.Hope this ans helps Regards Dr. Shesh