Hi.. Thanks for writing to us.. I have gone through your query and will try my level best to resolve it.. As per the symptoms of for toothache and a lump over the very back of teeth can be due to a deeply decayed tooth that is leading to tooth abscess formation due to pus formation that is leading to a lump formation.. Another common cause can be swollen gum flap over the wisdom tooth due to infection leading to Pericoronitis.. Pain in jaw and eye seems to be due to radiating pain from the tooth site.. You should consult an Oral Physician or Oral Surgeon and get evaluated and an x-ray can be done for confirmation of the cause.. In case if it is due to tooth decay then Root Canal Treatment or extraction depending upon the condition of the tooth can help followed by antibiotics and painkillers.. In case of Pericoronitis removal of gum flap or removal of wisdom tooth can help in permanent resolution.. As of now you can take anti-inflammatory painkillers like Ibuprofen for pain relief.. If pain is severe higher painkillers like Tramadol or Ketorolac can be taken after consulting an Emergency room or local Physician. Hope this helps.. Regards..