If you are experiencing foot pain and still want to keep up with your workout routine, look for low-impact exercises that provide a great workout. Water exercises; such as deep-water aerobics, lap swimming, or water jogging, are a great way to keep up a cardiovascular exercise without adding more pressure to your injuries. Other low-impact exercises include: indoor cycling, yoga, and strength training. Remember to keep within your limits. For example, ease the tension on the flywheel in a cycling class to modify the workout to your limits. 
Never let an injury defeat you! Talk with your doctor about what your limit is on exercising and go find the right low-impact exercise for you.
Photo | Himalaya MS150 training begins | by Meg and Rahul on Flickr | Used under a Creative Commons Attribution License