adam,
its good that you got on singulair, if that works to control things thats awesome, but if you need to dont be afraid to ask for something like advair or symbicort. singulair is an awesome drug, but its not all it was originally made out to be, although it does seem to be particularly good for exercise induced asthma, you may need more than just singulair, also, as a fellow asthmatic and a respiratory therapist, my biggest advice is never forget your rescue inhaler, especially while you are exercising, carry it with you at all times, and try to keep a back up stashed somewheres so you have something to fall back on.
as an example I will tell you my story:
when I was first diagnosed with asthma, it was right after a bad bout of bronchitis, I was started on singulair and albuterol as needed, this worked for me for a long time when I began having tachycardia issues when I was taking albuterol for my 3rd bout of bronchitis in less than 2 years I switched to xopenex, I have tried to go off the singulair several times without success, was having more issues during fall allergy season, so I added pulmicort, which is an inhaled steroid, did really well on the pulmicort, even tried to go off from it a couple times per my doc, didnt work, and recently started having issues with allergy season, my sinuses draining into my throat is setting me off, as well as all the farming stuff and burning and pollen going on right now is setting me off. my main symptoms are coughing, chest tightness, and shortness of breath, if I am wheezing its pretty bad, and I'm coughing up stuff, right now I am on symbicort 160/4.5 2 puffs twice a day singulair, and xopenex as needed and it seems to be working well, I love the symbicort, and xopenex works really well for me
jeff, asthmatics can definitely have a productive cough, less so than someone who has chronic bronchitis, but when the airways constrict and swell they produce lots of thick sticky mucus too, part of the reaction that is an asthma attack
the thing about asthma is that your lung function can be normal most of the time, and alot of asthmatics dont even wheeze, so alot of times asthma is just diagnosed by history, physical and if albuterol makes you feel better thats a good indication that you have asthma, they can do a quick test in the office where they test your lungs before and after bronchodilator like albuterol and thats often all they need
hope this helps