Hi My Name Is Beth I Have Severe Copd And

Hi my name is beth I have severe copd and I have been feeling so light headed tired my resting pulse has been between 124_130 also my oxagon is 93 and my low is 92 and real shacky inside my doctor gave me a 80 mg shot of steroid last week.and said I was in a copd exasperation.and I had flu shot but I can't shake being so tired shaky chest wall pain,when is the right time to go to er cause every year for the last three years in September for three days and I was trying to avoid that.