Calcium Buildup?

Recently I’ve been consuming alot of milk, and I’ve noticed a lump in my forehead. It’s not soft, or tender, or painfull. It’s just a small lump of bone. I THINK it’s just calcium buildup, but I’m not sure. I’m trying to slowly lower my calcium intake to get it to lower, but I’m not sure if that will work. Anyone else ever have this type of problem? Any advice would be appreciated.