Hi, I'm a 18 year old girl. I recently have been sick, sneezing and coughing, which was like a week ago... i was fine up until 2 days ago. It hurts to swallow. ok not hurt is painful as sin! I also have constant headache, and I've been running out of breath very quickly. I live on the 5th floor in an apartment building and as soon as a hit the 2nd to 3rd floor, i can barely breath and my head starts pounding... What's wrong with me!!!