I've been coughing for 2 weeks now, should their be something wrong with me?

It all started with a really bad sore throat, then the sore throat went away, but the constant coughing persisted. I went to the doctor and she checked up on me, made breathe, she listened and told me that I look fine, I don't have a fever or bronchitis, but she said that people do develop a short term chronic coughing that could last up to a month, but that it is nothing serious? Has anyone else heard of people coughing for an entire month and that it eventually goes away? Thanks and happy holidays everybody!