Am just 16 yrs old now.

I
have a problem for many yrs(3 or 4 yrs)
now.I got a swelling and pain on my
knees(legs),hand pain etc.
mainly swelling can be seen when i wake up
morning and at nights and even aftr an
aftrnoon nun.
I have been diagnosed and nothing was
found and not even an arthritis.
Someone said me that if you find ur legs
swelled up when you wake up in the morning
and gets lessened aftr a 1 or 2 hrs,it
means that you got some heart
failure..whenever i get tensed or
sad,excited etc my hands and legs get
colder..I got those symptoms and am afraid
is that true and whether am a heart
patient....
pls gimme replies abt this..
thank you.

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