Hi.. Can understand your concern.. As per your complain painful tooth along with lump on the jawbone indicates that there is dental abscess formation due to infection extending from tooth to region below root apex leading to pus formation and lump.. In case if tooth is extracted and the lump still persist it means still pus in present and not drained and the socket is not curretted /cleaned properly.. In case if the lump is below the lower border of jaw it can be swollen lymph node due to infection and it will gradually be reduced in size but if it is on the jaw it is a Dental abscess.. I would suggest you to consult a dentist and get proper curettage of the extraction socket done followed by irritation with hydrogen peroxide, betadine and saline followed by antibiotics and painkillers.. Hope this information helps.. If you find the answer helpful kindly write a positive review and click on I found this answer helpful as a token of appreciation.. Thanks and regards.. Dr.Honey Nandwani Arora..