Thank you for the query.
Usually traumatic extractions lead to complications such as hematoma
formation which is due to collection of blood outside the bloodvessel.
are due the infection .
Treatment of hematoma is done by applying cold packs to produce vasoconstriction
which helps to decrease the hemorrhage and swelling.
I would advise you to see your dentist
to rule out the exact cause for the infection as your lymph nodes are palpable .
A course of antibiotics and analgesics will help in reduction of pain and infection.
Hope this information helps you.