Stress Fracture

I just got back from the doc and found out I have a stress fracture in my left foot. The injury happened June 6th and I was just diagnosed today June 27th. I was used to walking my dog 4 miles a day. While I was waiting I did buy a recumbent exercise bike and have been riding 1 hour a day. The doc said I continue that as long as I didn't put much stress on my foot. I also have a 24 foot above ground pool.

My question is what can I do to stay active?