What the heck is wrong with me?

It sounds very much like you have pnuemonia. I know this is a gross question but when you cough are you coughing up phlegm? If so, spit it in the sink to swee what color it is, so you can at least tell your Dr about tomorrow. If by chance, it looks like there's blood in the phlegm go NOW to the ER as it would probably be a severe case of pnuemonia. The heaviness of the breathing is what makes it sound like pnuemoni now. Get ALOT of juices water etc, right now that's more important than eating. It's not allergies.