When Does Morning Sickness Start?
December 28th, 2006Morning Sickness — the bouts of nausea and vomiting experienced by a majority of pregnant women — could start in the fifth or sixth week from the first day of your last menstrual cycle, and continue till the sixteenth week of pregnancy. Some women may experience this for another month beyond the sixteenth week, while some of them may be affected, intermittently, throughout their pregnancy.
Contrary to its name, it can affect you at any time of the day, though most go through this in the mornings, as your blood sugar levels are likely to be at a low then. In a few cases, the affliction can be severe enough to affect the health of the mother and the baby. This condition called ‘hyper-emesis gravidarum’ requires medical attention. But for the majority, following a few thumb rules can help you easily tackle common morning sickness.
What Causes Morning Sickness?
No one, unfortunately, is sure what exactly causes morning sickness, but it would seem to be linked to the chemical changes your body goes through, during pregnancy.
For instance, estrogen levels increase almost a hundred fold. This commonly results in a heightened sense of taste and smell. The body also produces more progesterone to induce relaxation of the uterine muscles, so that a premature delivery does not take place. But this could lead to a relaxation of the stomach and intestinal muscles as well, resulting in constipation or a longer time for evacuation, in turn leading to an excessive production of stomach acids. It has also been suggested that stress and fatigue that commonly accompany pregnancy could play a role in morning sickness.
Another theory, which is widely accepted is, that morning sickness is caused by the buildup of hCG (human chorionic gonadotropin) in your system. HCG is produced in you after conception, by the embryo. The hCG levels increase till around the 12th week of your pregnancy, and then decrease. If you are lucky, this is when your morning sickness symptoms will start to decrease as well.
A pregnant woman has a greater tendency to a lower blood sugar, and this, as mentioned earlier, could lead to nausea. Again, women who have had nausea when stressed or ill or when on the birth control pill, are more likely to be affected by morning sickness. It has been said that women who are carrying twins may be pre-disposed to morning sickness; women having girls may also experience this to a greater extent.
Morning sickness could also be nature’s way of protecting you. Certain vegetables have toxins to keep away pests. These are not harmful to adults but could harm the fetus. So when a mother eats these, sickness is a way to ensure that she does not ingest them. Similarly, having excess alcohol, sugar, oils and meat could bring on the nausea reaction, which protects the baby from harm.
There is also a bright side to your morning (or sometimes, all day) misery. Recent studies have suggested that mothers who have morning sickness have fewer miscarriages. This is probably because women who do not have an increased production of the hormones mentioned, are likely to abort. This does not mean that those of you without morning sickness need to worry. Just have a quick consultation with your doctor to rule out any problems, stop obsessing about it, and enjoy your good luck … and pamper yourself in the early days of your pregnancy.
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Posted by Emma