Hi. Im Ilene. I was a gymnast for 13 years but i recently quit. I know that I have an accessory navicular bone in my foot because it was giving me problems. But i rested it and its better now that im not doing gymnastics. Recently, about once a week, I ve been getting horrible cramps on the inside of my foot near the navicular bone. the doctors also mentioned my arch was falling last time i went. I dont want to have to go again if its not necessary. these cramps are so sharp, i almost cry. i cant move my foot at all and i can put any pressure on it. I havent timed it but i believe that they dont last very long. Usually they occur at night when im sitting down at my desk doing homework. Please help me.