While it can certainly vary greatly from one woman to the next, or even from one pregnancy to the next for the same woman, the fact of the matter is that morning sickness, in general, will dissipate right around the 12th week of pregnancy. Having said that, there are certainly women who have had their morning sickness last longer than this, sometimes even well into the second trimester. Of course, these cases are especially rare. For the most part, morning sickness that occurs after the 12th week of pregnancy is considerably rare.

What this means is that the average woman will experience right around six weeks of morning sickness. Morning sickness typically starts around the 6th week of pregnancy and, as noted, morning sickness goes away usually by the 12th week of pregnancy. Again, any individual woman may experience morning sickness that goes away sooner, or starts sooner. There is some research that suggests the reason for the timing behind morning sickness might be related to the hormones that a woman’s body produces during pregnancy. Human Chorionic Gonadotropin, or hCG for short, is the hormone that is measured by a home pregnancy test, and indicates that a woman is pregnant. The levels of hCG in a woman’s body tend to rise during the first trimester, leveling off and stabilizing sometime around the end of the first trimester, around week 12 or so. While more research needs to be conducted for this to be conclusive, there does seem to be some evidence that this hormone may, in one way or another, be responsible for morning sickness.

If your morning sickness does not go away by the end of the first trimester, it is probably worth speaking with your health care provider about it. While it is possible that your nausea is due to morning sickness, it could also be a symptom of a different problem. Your health care provider can check for the other possible causes of your morning sickness not going away.

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