I've had pneumonia multiple times but I usually had a crackling. I've had the same pain back of body on left side. From back to left underarm and across left chest. I've taken 2 days of from work. But going back tomorrow. I'm on antibiotics and pain killer. I know it's pneumonia. Since having cancer Ive had it every winter. I don't get colds or flu. I feel guilty about work. I'm ill but I always feel worse if I can't go to work. It hurts to breathe move and talk but that's normal isn't it?