Hi, Neil,
I started Qi Gong a month ago. I tried sitting, standing and even laying down. The Qi Gong is closed related with Taoism and Buddaism. You can bring Qi Gong to your normal life by adapting it's life style.
Your pain may be caused by qi trying to circulate in your body. Often for beginner, you will feel it in the area you have some problem. Remeber to do some self massage and losen up after each practicing.
