I started having shortness of breath about a week ago and had chest xrays and my oxygen was 98% so I went back today because after 3 days of the shortness of breath or labored breathing I got the nasal congestion and runny nose and a day or 2 after the cough developed and the doctor put me on the zpak and the first day was today and for a couple hours I felt like I was high or something. I just want to know if it will take away the shortness of breath and if my oxygen is 98% and my chest xray was fine and my lungs sounded good how do I have trouble breathing?