hi !! i hve 5 weeks old son i really have a stapping like sharp pain on my back side of lower rib cage it strts from down goes to breast bone !! ut also hurts wen i deep breath n hick cup!! it realli hurts bad ! it gets lil cool down fr ahile wen i take pain killer . i did x ray,blood test ,urine test n evrything was normal ..bt it gettng worse day by day!! please suggest me !! what can i do