HOW DO I STOP COUGHING?

I have a cold, and just like every other cold I end up with a sinus infection and I guess what they call a nasal drip.

I end up coughing and hacking my brains out because of a tickle in my throat that I just cannot get rid of.

I can feel that it is a nasal drip, but can't get it out of my throat, or get it to stop tickling. It's hurting me to cough this much!!!

The last time I had this I almost cracked a rib.

HELP this is driving me and my family nuts, I can't breath for more than a minute without coughing, I can't sleep at night and I can't be going to school and nonstop coughing during lectures if this continues!!!
HOW DO I STOP COUGHING?
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