Jo, you need to give the American Cancer Society a call. When I had my breast cancer and a partial mastectomy (one side only) this awesome group of individuals provided me with moral support, friendship and tons of information beginning with dealing with the initial shock of finding out I had cancer, through my surgery, during treatment and my recovery period. They were truly my lifeline because most of them were cancer survivors themselves and knew pretty much what I was going through. This organization has a lot of services available at no charge to individuals who have cancer. I believe they may be able to provide you with a set breast forms.
I will be praying for you and may you have a speedy recovery.