Im 53 and never had asthma in my life.however ive developed a very mucousy nose and a productive cough with white and yellow mucous.i get very short of breath with exertion .im not sleeping well and wake quite a few times a night and I wheeze when im lay down .I have alsi had two seperate incidents of not being able ti breathe while lying in bed.ive also found out im allergic to many things such as textiles, nickle , ppd and many of the medications ive been put onfor coronary artery ddisease.my doc has given me a peak flow chart to fill in and ive noticed im only blowing 300 at most and 250 at night.im 5ft tall and weigh 9stone 8.do my symptons point to asthma? I would be very greatful for any advice