Hi. Thanks for your query. Noted your history of flu 3 weeks ago followed by swollen tonsils, heavy drainage, shortness of breath, weakness and heart pounding on slightest of activity. All these symptoms are suggestive that you are sufferning from bacterimia nad septicemia too. I would advise you the following: Intravenous antibiotics and treatment in a hospital. Clinical evaluation and examination tests of blood- CBC, culture and sensitivity Throat swab for gram staining and culture and sensitivity tests of urine X-ray of the chest and sinuses to see if there is pneumonia or sinusitis. You need an intensive therapy in a hospital.