What is going on with my foot? should i walk on it?

I recently fell and went to the hospital for pain in my foot in both the instep and arch. The doctors claimed that i chipped some of the bone in one of my metatarsals, however when a podiatrist took a look he claimed there is no break whatsoever. He put me in a soft cast and told me to see him a week later. He also mentioned that my foot will probably not feel better at all and that i wont be able to walk on it. Three days later my foot felt a lot better and I had to remove the soft cast after 5 days because i accidentally fully submerged my foot in water. when i try to take steps nothing hurts. My foot feels tight and there's some small pain in my arch but that is it. Does anyone have any input? should I just try to walk carefully on it?