Suggest Treatment For Painful Periods

Hi.. Im 21yrs old.. im having pain only in first day of periods, Can u tel me how to control tat pain naturally? y that pain occurs? Till i get the normal blood flow its paining, when the bleed starts(No pain) and i also have another problem. im getting that white(i dont know what it is) even in normal days & mensuration days. is tat is a problem?