PLEASE HELP, severe weight loss!

HELP! What makes u lose weight very fast after Antibiotics , about 70lbs in 3 months?? 19 year old male.. i have other posts which explain more symptoms i have :) //www.curezone.org/forums/am.asp?i=2228330&s=1#i1
i also had an cat scan on my abdominal and chest. This all started after a course of broad spectrum Antibiotics for 7 days for a sinus infection.. please help me Tweet