Hi Cody ... the shortness of breath feels like when you are winded after running. You're just not taking in as much oxygen as you need, but it happens when you have NOT been exercising. Sometimes it results in faster breathing like you're panting. The thing with breathing ... it leads to panic really quick. You can go 40 days without food, and maybe a few days to a week without water ... but only a few minutes without oxygen.
As to the lump in your throat, that is a classic anxiety symptom, also found in Benign Fasciculation Syndrome. As I understand it, it is not a symptom of ALS.