What is wrong with me now!??!!?

I don't know what this is so please help me if you can. In October of 2009, I had found out that I had the flu, and that it was just the everyday kind. Well my cough that I had gotten from the flu was getting worse, so I went to see the school clinic. They got me in and did a test that made me inhale the medication and since that cleared my airways, the diagnosed me with bronchitis. I had this bronchitis till early January, and was using the inhalers they gave me like mad. Well now my cough was gone, and I was feeling good. Unfortunately, I have my cough back, and have had it since late April. Is this cough due to my bronchitis, or is it allergies? I have no other symptoms other than the cough right now.