I had a cold for1.5ish weeks it went away for3days now back with a bad cough that sounds like barking and ive had a swollen lymph node for a long time?

Watch closely: In many cases, a person getting over a viral respiratory infection, develop a secondary bacterial pneumonia. This occurs when the respiratory lining, damaged by the initial viral onslaught, is now vulnerable to bacterial attack. Your situation is not uncommon. Given this type of pneumonia, if your symptoms worsen, see your doctor you may need antibiotics.