I CANNOT STOP COUGHING. 15 MINUTES STRAIGHT. HELP!?

My cough started in September of 2010. I noticed that I had been coughing for an unusually long time. I got myself checked out. Turns out I had a slight sign of bronchitis and asthma. My doctor prescribed me some antibiotics and an inhaler. It made my cough stop.

However, immediately after I stopped taking the antibiotics and inhaler, I developed a cough again. I have currently been coughing ever since. Some days are not so bad.

But recently my cough has gotten worse. I just went to an Asian herbal doctor and she said that my cough was due to my allergies. She never gave me any blood tests or anything. She just felt my wrists and told me that I have allergies.

As of this moment..I have been coughing for 15 minutes straight. I cannot stop. I have this itchiness in my throat and it just makes me cough. After I finish my coughing fit (cough for like 7-10 seconds straight), I immediately have the urge to cough again after about 5 seconds. It just doesn't go away. I have a strong feeling that it has to be allergies because my nose is dripping with clear, watery snot.

Things I've been taking to try and reduce my cough:

1) The Asian herbal powder medicine which I got. Two teaspoons with water before breakfast and two teaspoons with water after dinner. Everyday

2) Honey and squeezed lemon with hot water two or three times a week.

3) Halls menthol cough drops every so often

4) At least three water bottles a day

5) I tried taking Ibuprofen today. Seemed to help earlier. I just took Benadryl and an Advil about ten minutes ago.

This cough has been going on for way too long. It disrupts me in class and I know I'm annoying people because of it. I have had to leave class a couple of times to let out my cough. Right now, I'm just trying to find a way to get rid of this cough because I am literally coughing as I type this. It is ridiculous.

I have tried smoking before however not a lot. Definitely not on a daily basis, not even a weekly or monthly basis. But I have done it quite a few times this year.

I just need some quick tips to suppress this cough for today so that I can go get myself checked out because I am soooo sick and tired of coughing. Every time I cough, I use so much force that my body heats up and I started sweating. I just went outside to try and get some fresh air. Seemed to help but only a little.

Can you please give me some quick tips to stop my cough or at least make it not as frequent? I just need to slow down the rate of my cough for now so that I can rest. I have morning classes and I can't even sleep because of my cough.

Thank you