Nobody really know the cause of morning sickness, but it is suggested to be caused by all the new hormones that are circulating through your body. Its tends to be worse in the morning , hence its name, but can occur at anytime during the day or night. It usually begins around the 6th week of pregnancy and continues through the beginning of your second trimester. While the nausea is obnoxious, you can thank of it as a good sign! This means the placenta is developing well! Vomiting is normal, however excessive vomiting can be caused by Hyperemesis gravidarum, which is harmful to both you and your baby. If you aren't sure what is a little and what is A LOT, please contact your medical proffessional. Here are some helpful hints to keep that sickness under control: 1.Keep saltines next to your bed. Eat a couple in the morning BEFORE rising. 2.Drink ginger tea when you start feeling nauseas. 3.drink small amounts of liquids throughout the day to stay hydrated! 4. Avoid spicy foods 5. Avoid eating right before bedtime or naps