Suggest Remedy For Pain In Right Buttock And Thigh

About a week ago, I got up too quickly and smashed my inner thigh(right)on the sharp corner of a two-drawer filing cabinet. A couple of days later I noticed that the center of the bruise was kind of lumpy. Around that same time, I started feeling mild, nagging pain in my right buttock and on down the outside of my right leg? Should I be concerned? Or will this heal with time?