Are you taking calcium regularly? Reclast (like Prolia) will interfere with your bones from supplying calcium to your blood, so if you are not getting regular, daily intake of calcium, your body get's low on calcium that leads to all kinds of issues including body aches and pains (search "hypocalcemia symptoms") . Perhaps have your doctor check your fasting calcium and vitamin D levels. If you have low vitamin D, your body cannot absorb calcium that you eat / take which is also a problem while on Reclast. Just guessing here but worth looking into.