i have been getting sick very often. i have had pneumonia 3 times this year.i have sob wheezing black mucus chest pain and my ribs hurt.my doctor says i have asthma but the pulmonologist says my diagnostic pft was normal so i dont have asthma i am so confused and dont know what to do all my chest x-rays have come back normal but i know my body and something is wrong i cant breath and coughing brings me to my knees from the chest pain what do you think.