How to proceed with my chronic dry cough?

Hi doctor,

I am a 24 year old female. I am suffering from cough for almost a month and my abdomen is paining badly due to cough. The cough gets so severe and I end up vomiting, be it early morning or night. I consulted the doctor and was diagnosed with chronic cough. I followed the medicine and it only helped me to decrease the severity of cough and clear the congestion while breathing. So, I visited the same doctor for the second time and he wrote in the prescription as chronic dry cough. Still, I have not recovered completely. My throat is aching slightly. I can see the red portion with small white patches (pimple like structure). Whenever I have something oily or spicy, cough gets severe, especially after dinner and early morning. During coughing, I could not breathe and my face turns red and blue. Please help.