Nausea is a common problem with a wide range of causes, most of them fairly minor. Although food is sometimes the cause of nausea, it also is one of the things that can bring you relief, provided you eat the right food at the right time.
Morning sickness relief! 1 lemon cut up, 1 lime cut up, 2 knuckles of ginger, and 6 mint leaves. Just refill water for a couple of days then dump down the disposal when finished (it will help clean it).