one must consider bronchitis and of course various types of pneumonia. these are the more common complications of a cold that worsens. colds typically last about a week so when you have prolonged and worsening symptoms secondary bacterial infections are a strong possibility. you will need to see a medical provider so that you can be properly examined diagnosed and treated --- three things unfortunately that cannot be done blindly over the internet.
sick for 3+ weeks started with mild fever but turned into a cold which has grown progressively worse and won't go away? . the main reason i am concerned is because there is a rattling in my chest when i breathe out. it's like i can hear the fluid bubbling around deep in my chest. when i cough up mucus it is yellow. i don't have a fever. day quil helps reduces the cough for a bit but not the stuffiness. i've also been taking my allergy medicine. my sleeping pattern is not very regular but i get at least 8 hours a night. is this just a very prolonged cold or should i go to a doctor because of the rattling?