Please Somebody......How can I get rid of this cough?

Hi , It started last year when I was living in a cold country, I got a flu every few weeks. I got fever, cold , headaches,aches and pains and soar eyes and blocked nose and soar throat and a cough. I went to the doctor and was on antibiotics and steroids to help clear everything up. They worked abit but now I am left with a cough that i have the last year and cant get rid of it! It is a dry irritating cough that antibiotics and steroids and also I had acupuncture on which helped alittle but did not get rid of it! The cough is more frequent in the morning and at night and I find if i exercise my cough gets worse and physically drains me more than usual.I,m a very fit and healthy guy but when i exercise i can feel the fever coming back! If anybody could please tell me what i can do or what is wrong this would be a great help as at this stage now it is very annoying! Thanks for your Help!!