Salt Water is for clearing out mucus when you have soar throat, and you gargle it jeezus.
For head aches drink some iced tea and read 3 pages of the most boring book you have.
Since you live in America you probably dont have this but in Russia its called a Noshpa. And it relaxes your muscles, relaxing the brain. Im sure theres something like it in America, if not the closest thing to it i can think of is advil so yeh.