I am 26 years old male. I have been suffering from cough for over a month now. During day I rarely cough but it goes bad at night. Initially, I had running nose and phlegm coming out but it is almost like dry coughing. I sometime experience burning sensation in my food-pipe during night. I consulted few doctors and they got me away with cough syrup and antibiotics. They said that it is because of weather change and told me to take precautions and keep myself warm. They said that I am not required to see a specialist. I feel tired and have started to feel pain in my back due to coughing. When I take antibiotics I feel relieved but on stopping them it starts again.  What should I do?