Hi..i'm Feeling Really Weird In My Chest..i've Been Sick 2

Hi..i'm feeling really weird in my chest..i've been sick 2 wks with a bronchial infection..with a cough..I started getting sick with a persistent cough that hurt my upper stomach..I got a puffer, some antibiotics & some liquid codeine which I haven't taken today (been on since 18th) tonight I have the weird sensation in my chest & feel dizzy, light headed & nauseaus I don't know what's going on but I don't like this feeling & it's kinda scary