Hi, many thanks for the query!
You haven't mentioned reports of the blood test
that you had few weeks ago.
Nothing much to worry, you should do- RFT, USG KUB, Urine (R/M) to know more about, if someone told you that you have, a kidney
Also do Stool (Culture & Microscopy), CBC, ESR & get physically examined for the lump in throat, whether these are enlarged lymph
nodes or what. After examination, if necessary, do FNAC of the lump to know histopathological diagnosis.
For Umbilical hernia
, you need to get operated, if fit.
Wish you a good health.