U have ca n potessium deficiency along wd diabetes n frequent urination associated with it.first thing to do check n control ur sugar level either by oral hypoglycemic drug or tkng insulin inj. Second u hv to modify ur lyf styl n food. A morning walk, some strching exercises n yoga atleat give 1 to 1n half hr of morning for ds... n this is most effective way with no cost.dn check serum calcium and vit d3 level along with potassium... most probably ur backache n muscle cramp due to low vit d3 level... for ur diet add sugar free dabur chavnprash , take 5 to 6 almonds a day ,in fruit take banana (having potassium) plenty of water If u want exact drug treatment sent ur exact personal detail n disease history ur some investigation- fasting and post prandial sugar, hba1c, serum calcium, Serum vitd3, serum vitB12 serum potassium , thyroid (t3 t4 tsh) serum electrolyte, urine rm. Get wel soon