What Causes Breathing Difficulty Along With Blurred Vision And Vertigo?

I m having several medical problems that I think are connected, but am having problems getting a good diagnosis. I m on a limited income and am trying to make use of the VA system. I fit almost all the symptoms of Hypothyroidism, but the initial blood tests came back normal. I workout and eat healthy, without a lot of processed foods and sweets. In September 2016, I came down with acute Bronchitis. Sometime in Oct/Nov, after I started getting better, I started having more issues with breathing problems, increased heart rate, blurry vision in my left eye, vertigo, excessive bloating, more frequents headaches, and loss of appetite.