See a physician. You need examined please.
Wait! These symptoms are quite common and probably not concerning. I would be worried if there were a fever, or associated weight loss or night sweats, or if there were associated shortness of breath or blood in the phlegm. A week or two of a cough, however, is not at all uncommon and usually relate to viral infections. I'd say wait it out. Over the counter cough remedies might help too.