Does sudden fall in bp with tremor all over body appear in any stage of ckd?

No: your probably experiencing something called orthostatic hypotension. sometimes patients may be placed on certain medications to keep their blood pressure up (midodrine). discuss further with your doctor the possible causes and treatment. in the mean time when changing positions take extra time to let your body adjust

You've got a couple: things going on. You're on insulin, so I'm presuming you are diabetic. DKA can cause hypovolemic hypotension. If you are on dialysis & they take a large volume of fluid from you, you can have a major drop in BP - but the HD techs are supposed to be checking you for that. CKD can cause hyperkalemia (potassium too high) which will absolutely cause weakness & tremors, w/ case reports of hypotension.