Gina,
Morgan here, this sounds like something more than congestion to me, it sounds like you need a bronchodialator, like albuterol, there isnt anything OTC like this, and this is something to consider going to the ER for if it gets any worse or changes, you are right, your bronchials are probably tightened, and this is what causes wheezing. (I am a resp therapy student, but my advice isnt to be taken as medical advice, you really need to see a doc) I would avoid inhaling anything like like vicks or anything like that at least untill you can see your doc, these can irritate already irritated bronchials and cause more inflammation and constriction (I have been going through the same thing with my lungs, had a flu/cold, and was recently Dx'd with asthma). my best advice would be hot showers, avoid really cold air, and anything that could be irritating, and either get in to your doc, or go to the ER if anything changes this really isnt something you can manage yourself