Pain

I have a pain in my knee
It's there when I go into deep flexion
Or when i try to snap my leg straight
As in walking or taking a shot in football

It's onset varies
Sometimes it's sudden and somtimes it's slow and gradual
But there you go
It is a bit of a mystery

I'ld like to say its a dull ache
but sometimes it can be very sharp
making my leg jerk like a fish on land
trying to relieve the pressure from deep flexion

It radiates up my thigh
Starting just above the patella
And then higher up
more focused on my gluteus medius
It aches at times
Especially when walking on slippery surfaces

Theres also pain in my chest
Not to forget my head and down my right arm
especially over the knuckles
It swells and bruises and bleeds
Luckily the left arms alright
Maybe because I damaged it when I fractured my radius

It happens at night
Sometimes into the wee hours of the morning
It makes me shout in frustration and anger
I know sometimes adrenalin adds to this
And I'm pretty sure I've plenty of that

It gets worse when I think about it
Or put my attention to it
But it definitely gets better when I sleep
When I'm able to, ignoring it helps too

Scale? I'll give it a heartbreaker rate
So bad it breaks me, mentally, physically and emotionally
It hurts so bad sometimes that I smash my hands with something hard
Just to take away my thought from it
They say physical pain can temporarily relieve it
Thats what I do
I know its not good
But temporary relief is better than constant pain

What's wrong with me doc?