i am female 42 years?

he pain in left hand started six months back,with experiencing pain when due to sudden jerk. The pain would subside in few minutes on its own. I thought it to due to some sprain. Gradually the pain became severe with time. Last three months, I have been unable to lift my hand fully or brush my hair etc etc. The pain has not subsided yet. I am unable to sleep in night. I have tried homeopathy, aurveda medicines but not to any benefit. I took pain killers for more than a month but understood that it is not the solution. I have taken 15days physiotherapy sessions which improved my situation a bit only. I am trying exercises at home as advised by physio. However my hand feels weak and the pain is not going away.

Can anyone help me, advise me any medicine for pain and immobility? How many days this will continue? what is soloution