I am not sure what is happening to me. It seems that I have cold all the time. Lately I even started to be worry about this. I had some problems with my sinuses, before, but it is worse now. A friend of mine told me that I may have sinus polyp. Can you develop sinus polyp? And if you can, what are the symptoms?
Your friend can easily be right. Polyps in sinuses or in nose are giving the symptoms you just described. And, yes, it is quite possible to develop sinus polyp, especially if you had sinus problems before. If you have that much trouble with this I suggest you to ask your doctor about endoscopic examination of your sinuses. That is not painful procedure and can help with diagnose (it is small telescope which can help your doctor to see do you or dont you have polyp in sinus).