Before 20 days ago i was diagnosed with chickenpox with fever dry cough and vomiting. After taking prescribed treatment it resolved. After that I have suffering from dry cough burping and flatulent so after taking antacid and acidity tablet dry cough get resolved but after eating still burping and flatulent is there and feel like something stuck in mucus then I have a feelings like sneezing but no sneez and feel like shortness of breath some times very rearly nose and eyes feel itchy. Sometimes i feel good but suddenly symptoms start. What is the problem please suggest. I have already take allegra M but no effect.