<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hello, I have been fighting a cold for about four weeks now. My throat is swollen. I feel like I have a lump in my throat. I am on Doxycycline for a week now and no change. It bothers me every time a swallow. Not sure what is really going on with me. I do not have a fever and my throat is not sore. I am getting sinus headaches but the antibiotic is not helping.  <response>: Hello dear, warm welcome to Chat Doctor.come have evaluated your query thoroughly. This seems in relation with adenoid enlargement following respiratory infection most likely. Need to get another group of antibiotic as Caroline or cephalosporin with your doctor for better coverage. Additionally gargles with salted lukewarm water added peppermint oil 3 times a day will improve faster. Hope this clears your query. Regards. 