Cough insists

Hello,
I got a cold on Tuesday and all the symptoms (fever,sinus)have left.
But I have the worst cough of my life.It was the third night I didn't sleep because of cough.
I almost have no phlemes but the cough is so strong and all night.
I made 6&6 protocol and circulating breathing with tree activated drops twice a day the first days but cough did not left me.
Please help me.