Shear terror symptoms and conditions

I have never, ever responded to any of these "side effects" websites before! As a healthy person who very rarely requires medication, I had to find something on the web that would "explain" my suspected side effects for the Levaquin I've been taking for the last three days. This was prescribed for a UTI. The "new" side effect (that I didn't see addressed anywhere here) was what I can only describe as "asthma-like," to include wheezing, coughing, and shortness of breath. Anyone else with this symptom? I was also overcome with a great sense of futility that just scared me. I am normally a positive, "the-sun'll-come-up-tomorrow" type person, but this just knocked me for a loop!