Hi Dr, I m a 27 yr old female. For bout 3weeks now, if not more... Each morning, I cough out mucus, some tend to be very thick and grayish in color. And few times wen u brush , I throw up mucus and sometimes foamy white silava. I also realized about 2weeks now that I feel sleepy alot and feel heavyness and weakness in my legs wen I walk. Pls wat is do you think is wrong wit me.