All of these symptoms started seemingly out of nowhere 4 months ago. It has been a constant uphill battle of symptoms and doctors. Some of these symptoms include (fatigue, headache, stuffy nose, heart palpitations, shortness of breathe, anxiety,  body aches, etc) 
I have been to a cardiologist and everything came up "normal." Multiple doctors have taken chest x rays, ct scans, blood work, etc. All of these returned as "normal" as well. I have no idea how all of these symptoms occurred out of nowhere like this and completely took control of my life since.. I have lost my job, my girlfriend whom I care about very much is questioning things in our relationship, I have pulled away from my family, and I feel like a complete loser.. I feel like I'm in constant survival mode now. The headaches, and the dizziness are somewhat newer.. I can't tell if this is all anxiety or not. Some doctors seem to think it is, but anxiety is so broad and google doesn't help. If someone else is dealing with the same symptoms, please let me know your symptoms and what you did that helped. It's really shitty when you go from completely healthy, to feeling like you could "check out" anytime. It's almost like a complete 180, and it doesn't seem to be improving.