Morning sickness. I'm sure you've heard of this one. While they say it is usually gone by the first trimester of pregnancy, plenty of women will tell you it lasts the full nine months. And just "morning"? It is also known by some women as "all day sickness". It might help if you keep a packet of dry crackers by your bedside and eat a couple before you get out of bed in the morning, and eat regular light snacks all day.