How To Treat Sharp Pain Below Left Side Of Rib Cage?

Yes, for the past 3 days while lying down i experience verysadden sharp needle like fast pock below mid left ribcage last for a secend makes me scream . Iam 53 , 180 lb , 164 cm , Dx ; fibromyalgia , fatty liver, enlarge spleen, errosion in the sdtomach, gastric ref.