Hi,welcome to HCM. Your history looks like the swelling behind ear
and armpit may a lymph
node but it needs to be evaluated. So better get a FNAC(fine needle aspiration cytology) of the both the swellings & carry the report with you while going for annual check up. You get thyroid
profile done also as you have family history. These two things might be related.SO don't be late. Good luck.Thanks.