Plz answer 10 points thank you?

Ok i am 20 years old and female i am freaking out so bad right now i think i am dying i feel like i cant breathe and i am going to p out i went to the hospital like 3 or 4 hours ago because i was having a bad headache for 3 days and kinda weak well they told me it was a cold but i think its swine flu or something because my chest hurts really bad Would my pulse rate be normal if i wasnt breathing good? how do i know if i am not getting enough oxygen? oh and anxiety plz help i think i am dying.