Is my sleeping position is good for my Health? I always sleep on my stomach in nights and not on my back.?

Is my sleeping position is good for my Health? I always sleep on my stomach in nights and not on my back. If i try to sleep on my backside then it takes usually 1 hour for me to sleep because i find it uncomfortable. But if i try to sleep on my stomach then i get sleep very quickly. Does my sleeping position is wrong? I have problem of little back pain. Is this due to my sleeping position. How could i overcome this problem? What should i do I want to sleep on my backside?