Here is an old ( 1925 Arm & Hammer Company) all natural cold remedy my family uses --really works.Dr.Mercola posted it on his health web sight recently.
Day 1-Take six doses of 1/2 teaspoon of baking soda in glass of cool water,at about two hour intervals
Day 2-Take four doses of 1/2 teaspoon of baking soda in glass of cool water,at the same intervals
Day 3 Take two doses of 1/2 teaspoon of baking soda in glass of cool water morning and evening.and thereafter 1/2 teaspoon in glass of cool water each morning until cold symptoms are gone.
Hope you get feeling better soon.