I'm sick (possible acute bronchitis).. What should do?

I'm not hungry, though I know I need to eat. Food doesn't look very appetizing to me... I've been drinking a lot of water. I can't stop coughing (brings up phlegm/mucus everytime). I'm tired or dizzy most of the time, though everytime I lay down the coughing gets worse. My throat is sore, and my head has a constant dull ache. Everytime I cough I get sharp pains in my chest. I've taken dayquil everyday, and been sucking on cough drops, but these seem not to be working any more. I'm sick of not being to eat, sleep, or do anything! I want to eat (what should I eat?), I want to sleep (any ways to help with that?), I just want to continue my summer.... Any advice would be appreciative. Thank you, and have a wonderful day : )