We often hear first-time mothers or first-time pregnant woman complaining of nausea and vomiting to their medical professionals which they usually felt and experience during their early weeks to months of pregnancy. But what really are these nausea and vomiting really caused by during pregnancy?
Hyperemesis Gravidarum (images from xanga.com)
Nausea and vomiting, Hyperemesis Gravidarum, to pregnant woman are normal signs and symptoms to the changes of hormones mainly due to pregnancy itself. Such of these hormones are Estrogen and Human chorionic gonadotropin (hCG), respectively.
The specific weeks these manifestations occur are between weeks eight (8) to twelve (12) of pregnancy, or the first trimester, or the first three (3) months of pregnancy. These are the weeks when the above mentioned hormones peaks and gradually lows and perhaps the reason, 13 weeks of gestation or pregnancy and beyond, nausea and vomiting decreases as well and eventually stop.