hi.. thanks for using HCM..
you have submandibular lymphadenopathy
, this is caused due to any infection in the oral cavity, gum, tooth..
you are general symptoms like myalgia, joint pains
could be suffering from upper respiratory tract
see your physician for the antibiotics, analgesics, and take some rest..
also add some multivitamins, with vitamin C
for early recovery..
all the very best..