I have had a tickle in my throat for days and it causes me to have an awfully painfully cough which i cannot control. It hurts my throat, head and chest and mostly occurs in the evening and when I am sleeping, it keeps me up for hours and isn't good because I go to college. I've tired lozenges, lemon and honey and gargling salt water, but nothing has worked. Can you please help? As it is now getting very annoying.