For your sore throat and nausea, try sucking on Jelly Beans...I know those have worked wonders for pregnant women I know
Also, when I feel nauseous (which is not uncommon, I have a weak stomach, and am sensitive to certain smells, motion sickness, and even being nervous can make me sick!)...anyway, I suck on Ginger Altoids. They can be hard to find, and the first one or two doesn't taste very good, but ginger is a natural anti-nausea remedy, and they kind of burn like a regular Altoid does, so it soothes your throat and clears sinuses.