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名無しの1 2016年05月17日 18時19分

sounds like a dropped arch,which can cause exucatirting pain, and generally gets worse with time. Seek help with a podiatrist, who will check you out, ie bio mechanics exam, and he will advise you. Most people with dropped arch are given Orthopedic insoles which are shaped for your feet and will raise your foot which will give you tremendous relief after getting used to wearing them.