Hello, Wilma,Welcome to Just Answer and thanks for your question. Many people do have arthritis as early as their 30s so your GP is right about that. Actually there is no way to get a second opinion without seeing another provider in person. The specialist who treats foot problems is a podiatrist or a chiropodist. S/he can evaluate your gait and check for any other problems. S/he can also check to make sure your orthotics are made correctly to improve foot alignment. Orthotics can be made for dress shoes with reasonable height heels. Well-made flats with properly fitted orthotics are always better than heels, regardless of what your physio says. People were not designed to teeter on the balls of their feet in high heels. You can check the site below for a chiropodist in your area.