Tendinosis. Am facing it from 6 months.

Please please suggest me.. I am male 27 years working in a software company from last 4 years. From six months back i am getting a strange problem. When i walk more or stand more or sit for longer time, i am Getting moderate pain under foot just below the leg fingers. Initially i neglected it assuming it will be cured, but pain still exists. Later i consulted one orthopaedician he did x ray and D vitamim test. X ray seems normal but vitamin D count is 15. He suggested me vitamin tablets , i consumed them but pain still exists . Then after 2 months i consulted him he then suspected uric acid levels. It is fine but at border level. So i consumed febustat 40 mg. He also suggestes ultra sound physio therapy. Physio therapy guy saying my problem is TENDINOSIS. Now i had uric acid test and this is also normal. Now even now the pain cstill exists. Pain is modrate but increases when i pressurise more. Please suggest what step should i take next. I am facing it from 6 months. Thanks in advance.