Ive been sick for about a month now. My first week, i was diagnosed with a sinus and ear infection. I took antibiotics for two weeks, and only got my ear infection terminated. My sinuses were still acting up and the illness seemed to have moved to my chest. I have been continuously coughing for about two weeks now, with pains in my chest. I went back to the doctor and was told i have costochondritis. I am taking amoxicillin for the sinus relief, and some cough medicine to help with the pain in my chest. Still finding no relief, they said i had the chance of being borderline pneumonia, is that what i have now?