The key here is to realize that your physical pains are from the anxiety and not anything else. It is easy to become a hypochondriac with all the random physical pains that anxiety gives.
Realize which pains you get from anxiety and tell yourself that it's only the anxiety and you WILL get rid of the anxiety soon. Don't focus on each single physical problem because if you think about it, it will make things worse.
Practice deep and slow breathing. Do it often. Anxiety robs you of oxygen, so you can make up for that with the slow, deep, and relaxed breathing. Try it right now! If you are currently experiencing anxiety and are reading this post - stop for a second and take a SLOW, DEEP breath. You will see how much that helps.