Thanks for asking the query,
is a extremely painful condition in which the blood clot gets dislodged from the socket leaving the extraction socket exposed to atmosphere.
I would suggest you to visit the Dentist
and take a guaze pack soaked in zinc oxide
paste which will give a soothing effect, you probably have to go to the Dentist periodically to change the dressing, this takes a time of usually two weeks to heal.
Take tab brufen twice for pain relief.
Take lukewarm saline gargles and antiseptic mouthwash rinses.
Maintain a good oral hygiene
Hope this helps out.