I have a horrible cough, dark yellow mucus, sore throat, chest hurts, body chills.. i'm only getting worse. what should i do?

Get Medical Help: You are ill. You may have pneumonia. It is time to see the doctor. You do not need the er. You need a family doctor.

Stop smoking!: Then go see your doctor. Btw, color of phlegm does not indicate viral vs bacterial infection, nor need for antibiotic. But your presentation is worrisome for pneumonia so get evaluated today. And stop smoking (can't repeat that often enough).

Go in for eval: Depending on length of symptoms, this could represent a normal viral respiratory infection, but also could represent pneumonia or influenza. The intensity and worsening of your reported symptoms sounds more concerning than a cold.

Listen to your body: You may need to go to urgent care for antibiotics but you also need to stop smoking and adopt a healthy life style that will allow your body to resist infection. Vit d may be deficient and vit c. You may need more sleep, a healthier diet avoiding alcohol, sugar, wheat, and dairy, stress reduction, and exercise.