Re: allergies/trouble breathing
It does sound like you have allergic asthma, but it should be treatable.
Bloodwork is not the most accurate way of testing for allergies, skin scratch is better. I suggest you see an allergist and get the skin testing.
In the meantime, taking antihistamines can help. You should also have a rescue inhaler to relieve symptoms when they bother you a lot, and possibly an asthma control medicine. I developed allergic asthma suddenly in 2010, and at first I was struggling a lot. But now, I take Flovent twice a day and I feel OK most of the time. I also went on allergy shots, and it's reducing my sensitivity to allergens.
What kinds of doctors have you seen? Have they prescribed any medicines?