magnesium oil for relieving restless legs

I am currently 16 weeks, and experiencing terrible leg cramps / restless legs at night. I was told to try a magnesium salve, well I was fortunate enough to find a lady in my town who makes them, but they are literally all over the place for purchase. Anyways just wanted to share how much I absolutely love this, it has almost a cooling effect when applied topically, and on evenings where my breasts are incredibly sore I apply it to them as well and it seems to help even that pain a bit. Figured I'd share just in case anyone wanted or was looking for a natural way to deal with some of these inconveniences.