I have coughed up green and now brownish-grey phlegm and have felt flu like symptoms for over a week, is it possibly pneumonia?

Yes. Pneumonia is an infection of the lower respiratory tract and usually causes shortness of breath, fever and productive cough. Pneumonia produces unusual sounds that can be detected by a stethoscope and confirmed by a chest x-ray. Please consider seeing your health care provider.
Certainly. Common symtoms of pneumonia include productive cough and fever. Viruses are always a possibility, but typically improve within 7-10 days. Pneumonia can be very dangerous...I suggest you see a doctor who may order a chest x-ray and perhaps some blood work. Interestingly, the color of mucus is a better indicator of hydration than infecton...But a week of worsening symptoms is always concering.

Related Questions

Had flu-like symptoms (tiredness, mild ache) 2-3 days ago; that subsided but still intermittent cough w/thick yellow-brown phlegm. What should I do?

Sounds viral. Drink plenty of fluids and get eight hours of sleep every night! Eat healthy and take some decongestant/ expectorant if allergy medicine does not help with coughing from Postnasal drip. See doctor if condition worsened, you may have a bacterial infection that requires antibiotics. Read more...

Normal CBC and Urinalysis. XRay result is low-risk Pneumonia. Started coughing last week then flu-like symptoms since Thursday. Correct diagnosis?

Ask / trust your doc. It would be most reasonable to ask your existing doc because s/he knows more about you than anyone online, unless you do not trust her/ him. How to work closer/ better with doc to reach best possible diagnosis for most reasonable treatment, care, & counseling? Follow instructions described in http://formefirst.com/eNewsletter06.html. Read more...

This person that I know had flu like symptoms and I took her to the hospital. Tthey diagnosed her with pneumonia. Now she in icu. How is this possible?

Coincidence. "flu" is a viral infection that enters the body thru the lungs. Pneumonia can be either bacterial, viral or fungus, which all can enter the body thru the lungs. Unfortunantly, early symptoms of all are very similar. Treatment is often completely different. Read more...
Curb65. It depend on how bad the pneumonia is as well symptoms. Some person particularly young compensate well so when they reach to hospital they are in bad shape. If person with pneumonia had fever, low blood pressure, or damage to any other organ due to infection they need close monitoring. Lots of doctor use curb65 criteria. It stand for confusion, uremia, increase breathing rate, low bp, age > 65. Read more...