Hello there ,
Thanks for writing your query,
Pain in jaw may be due infected tooth and indicates the spread of infection to the jaws.
There can be infective lesions related to tooth like periodontal abscess
or gingival abscess
draining in the oral cavity.
bening or malignant swellings of the jaws .
cysts of the jaws , related to tooth or bone may also lead to pain in jaws.
exact diagnosis can be made only after clinical examination and evaluation by taking radiographs.
i would suggest you to get and OPG radiograph done which will help in diagnosis and accordingly treatment can be planned .
consult an oral surgeon and get the examination done,
For other medical problems like tachycardia
and overwight you need to consult a physician .
i hope this helps ,