swollen, nectrotic lymp node on upper lateral part of neck

Hi, im Ms.Lee 30 years  old,  female, married. i have this swollen lymph node, soft  tissue on the upper lateral part of my neck for 7 weeks  now.it  is painful and warm.it is  increasing in size  and almost 2x3 cm now.before it started  like a small pea size.i have  2  episodes  of  low  grade  fever, im on antibiotic. 500 mg. po. bid, for  1week. i had done my ultrasound yesterday asordered  by my  local  dr. of  the soft tissue,and  the results  reveals:
~Soft  tissue  mass with  central  necrosis measures 2x3 cm. with relatively thick capule.There is  central  degeneration with increased  vascularity in the wall.
It  has lobulated outline which may represent necrotic lymph node.there are multiple  deep  cervical lymph nodes.the largest one at  the  mid aspect of the neck.
My thyroid  is  being  checked: there are  2 thyroid  nodule noted on the rt  lode measure 1.5 cm with slight  enlargement of the isthmusImpression is  retroauricular necrotic  soft tissue,  w/c may represent necrotic lymph nodes and  TB considered. Pls. help!what should I do? my  Email  is, ***@****.