Hi. I Recently Had A Bout Of Diarrhoea Lasting 3

Hi. I recently had a bout of diarrhoea lasting 3 days. I was prescribed ciprofloxacin as it was bloody for some part of it. Since the diarrhoea has stopped I have suffered some chest pain and shortness of breath. I find myself putting effort in to breath and yawning to catch more air. Ecg normal, pulse ox normal, bloods normal. ? Bloods negative for embolism. Please help. Very stressful having to catch air