Lately, Besides the increased lightheadedness and nausea upon standing and the cold-weather triggered asthma flare-ups, when I talk, I can barely breathe and my chest sometimes hurts. On my job, I have to use my voice all day. By the time I get home, I'm like a one year old---I can say a few words, but cannot carry on a conversation. I used to love talking on the phone, but now it's just too stressful. Even when I can breathe, I'm still so exhausted and cannot show excitement in my tone, even if I am excited.