Hello, Healing often occurs months after an extraction. Bone can become more prominent as the tissue heals and shrinks around the extraction area. Possibilities most likely include either a fractured piece of bone or root remaining that would act like a splinter causing inflammation around the tooth or trauma to the tissue at the extraction area. If the piece is large or deep, this may explain your experience. Consult your dentist and obtain an X-ray for a diagnosis. Rinsing the with warm salt water and keeping away from the area while sticking to a softer diet will give the area a chance to heal if trauma is the cause of your discomfort. Tylenol or Advil can reduce inflammation. Try not to irritate the area further and if symptoms persist or worsen, consult your dentist for treatment recommendations. Hope this is helpful and you feel better soon. Thank you for your inquiry.