These symptoms, bone pain, difficulty moving, and muscle cramps, strongly suggest a deficiency in key minerals like Calcium and Vitamin D, or an underlying bone condition such as osteoporosis. Before taking any specific medication, it is critical to consult a healthcare provider for blood tests to check your Calcium, Vitamin D, and electrolyte levels. For immediate, safe support, you may start a standard daily Calcium and Vitamin D3 supplement and ensure you stay well-hydrated. Please avoid taking strong painkillers or high-dose prescription supplements without a proper medical diagnosis and a doctor's guidance.