I'm very afraid I have lung cancer.

Sometimes, when I move my right arm I feel a dull pain in the top right part of my chest bellow the collarbone/next to my armpit. It kind of feels like a stiff muscle but the pain comes from the inside of my chest, behind my ribs. What could it be if not lung cancer?

It's not lupus.

It is lupus.

>>2-3
Is this a joke to you? I might be dying!

Sounds like milkribs

Now my neck hurts real bad. What if the cancer has spread? Jesus Christ, I'm already dead. :(

Most likely just a pulled muscle.  It could be the result of many shoulder and back injuries like a rotator cuff tear, and it might've happened just from sleeping wrong or coughing.  Relax, don't be a hypochondriac, get more exercise, eat right, and stay away from doctors.

Listen up.  Cancer happens.  It also goes away.  Problems occur when a fucking doctor finds it, tells you you're in a fight for your life, and then starts compromising your immune system with noxious chemicals and radiation.  I love science, and I love western medicine, but they've fucked this one up big time.  We're getting pretty good at repairing injuries, but we still don't know shit about illness.

I had pains in my liver area for about a year, but after drinking heavily, it's gone away. Though the pain does sometimes come back when I wake up.

could be arteries

Are you British?  It could be the beavers.