Do you have a peak flow meter? This measures how well your lungs are doing by blowing into it quickly and reading a number. I have an asthma action plan that tells me what my good, bad and really bad numbers are and what action to take for each one. Ranging from taking your at home inhaler to going to the ER. If your breathing gets really bad, I'd suggest that you go to your PCP's office or the ER to get a nebulizer treatment. You can't just sit around if you can't breathe! (/rant from an asthma sufferer)