s not an option for you, my next suggestion would be
yoga. It will definitely stretch those muscles and is very low impact. With
yoga, you have to be conscious of what you are doing in order to do it correctly, so it's also excellent for putting you in a calm state of mind, which will also help control the pain. My favorite dvd is by Element - Yoga for Beginners. It gives detailed instructions on how to do each pose and also has work out sections. I think the dvd was around $15.