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Just based on positive mantoux test
it is not advisable to start with anti-tuberculous drugs.You need to get investigated for extra pulmonary TB that is TB in any other part of your body like abdominal TB;endometrial TB;or Tb of any other organ.To confirm you can do a Immunological test of TB IgG
;&IgM ;a recent addition to it is TB Gold which is a confirmed test to diagnose TB.Get the test done & if positive then after consulting your doctor you can start medicines if he prescribes.
Hope this answer is helpful.