>>to be honest I'm not even sure exactly what an attack is~ I just feel like I can't breath,can't get a deep breath and my chest and sometimes neck gets tight,also the mucus gets worse.when I workout the mucus gets very thick.
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[url]http://asthma.nationaljewish.org/about/symptoms/[/url]
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This site will help you some... and it sounds like what you are experiencing are symptoms of an asthma attack.
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"The FDA, in a statement, said the benefits of treating patients with
Serevent or Advair continue to outweigh the risks when used according to instructions." from an article in MSN.
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[url]http://yalenewhavenhealth.org/HealthNews/Reuters/NewsStory0814200319.htm[/url]
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As for Singulair, there are many side effects, I, myself, don't take it becuase of adverse reactions, but everybody's body chemistry is different.
What works like a miracle drug for some doesn't work for others, your best bet is to have your GP refer you to a specialist, it may take some trial and error to find the right combination for you, but it will happen.

Good luck

peny