Cut up some fresh ginger root into a cup, juice half a lemon into the cup, and then add the juiced lemon half. Poor boiling water over lemon and ginger. Let steep for 5-10 min. add honey to taste and enjoy. Clears the sinuses too. Tastes good.
I also have this problem - incredibly painful. I have tried lots of remedies (salt water one included) and I have found that the best one is to warm milk in the microwave, squirt and stir lots of honey in and drink it. The mixture really sooves your chest and throat as well as being delicious!