Dear friend, welcome to HCM.
swelling of feet commonly occurs if anaemia
is severe. at your age that may be the cause.
how low is your haemoglobin?
does the swelling increase on standing long/ at the end of the day?
it is not due to PD. cardiac failure, renal failure
are next common causes among many others.
is it slow to occur or comes on fast?
application of heat can be harmful and not useful. please post the test results to enable me to answer more precisely.
I hope to have answered your query satisfactorily.
Take care and please keep me informed of your progress.
Good Luck !
May I request you to rate your experience here before you close.