i have been coughing up green phlegm for about 5 days,recently tonight i got a headache where i kinda felt like i was spinning and at the same time i got nautious,what do you think it is.I have been taking over the counter medicine,cough drops,drinking warm soup,drinking plenty of liquids.I was just worried because i seemed to get the headache,being nautious, and i felt my heart beating quickly, which worried me even more.