Thanks for posting your query.
you might suffering from rheumatoid arthritis
and your doctor had started Disease modifying antirheumatic drugs(DMARD).
Beside the drugs , you need life style modification, education about the disease, regular exercise, and physical therapy
to fight the disease better.
Take diet rich in Omega 3 fatty acid , complex carbohydrate
, Vit-D &calcium,fruits and vegetables.
Take low fat diet.
Drink ample of water.
Watch your weight.
Have a positive attitude.
Wishing you good health.