Nausea in pregnancy is very common, affecting more than 50% of pregnant women. Though commonly called ‘Morning Sickness’, the symptoms can occur at any time of the day. Nausea of pregnancy usually improves by 14-16 weeks, but can continue throughout the pregnancy for some women. Nausea in pregnancy is usually not harmful to your developing baby, but may become more problematic when associated with consistent vomiting and weight loss.
The cause of Nausea in Pregnancy is not well understood. It may be caused by the elevated hormone levels of pregnancy and their effect on slowing overall gut motility. The GI tract is normally constantly moving food and stomach acid from the stomach, though the GI tract. The effect of slower gut motility can result in a feeling a nausea after eating a large (your standard sized) meal, where food isn’t moving out of the stomach at the same rate. With slower gut motility, stomach acids aren’t moving out of the area at a normal rate either, potentially also causing a feeling nausea when we go 3-4 hours without eating.