Hello and welcome to HCM. As an Urologist,i can understand your anxiety. You ve not given details of the stone position in the kidney. Have you had stone formation or treatment in the past.? You need to take a medicine to shrink the size of the stone. So take Potassium Magnesium Citrate tablets twice daily. Gradually the stone starts to shrink and should flush out with fluid intake of 15 glasses daily. Coconut water may be stopped. If you ve any doubts,send it as a direct question to me,with all reports. Dr.Matthew J. Mangat.