How Would I Know If I Broke My Arm?

Go to an Ortho. Dr. NOT the emergency room.

I broke my arm last year, the hospital took x-rays and said it was a contusion and to move it all I could, the more the better. I then waited 6 weeks and it was not improving. The ortho. Doctor took one look and said it was broken before x-rays. Had to have surgery, then pt for months.

Good luck.

If you in pain after a day or so and can't put pressure or bend it on the area then probably broken.  You can go to an Urgent Care place (call if they have an xray) and it will be cheaper than the ER.

You will hear a cracking noise. It hurts.

You could know it by making an x-ray at the hospital or see the chinese doctor specially for the os.

Well, you could be screaming in pain saying "kill me now!"; or you could be more logical and go to the hospital. If you don't want to (even thought I have no idea why) you should at least check a GP, or you could try and see that if you try to move it will it move well? If you get a pain you could have a fractured arm, so I would recommend you go to a GP or hospital