There are probably a few reasons for these variations: Hormone levels.Higher-than-average levels (as when a woman is carrying multiples) can increase morning sickness; lower levels may minimize or eliminate it (though women with normal hormone levels may also experience little or no morning sickness).First-time pregnancy status Morning sickness is more common and tends to be more severe in first pregnancies, which supports the idea that both physical and emotional factors may be involved.Physically the novice pregnant body is less prepared for the onslaught of hormones and other changes it’s experiencing than one that’s been there, done that.The good news: For the vast majority of expectant moms, the worst of it is over between weeks 12 to 14 (though a few women continue to experience symptoms into the second trimester, and a very few, particularly those expecting multiples, may suffer some well into the third).Even better news: Though morning sickness might make you feel lousy, it’s not harming your baby. No one knows for sure — though there’s no shortage of theories.Genetics Women whose mothers had morning sickness have been shown to be more likely to develop the condition themselves.
And since that sense of smell is extra-keen in a newly pregnant woman, morning sickness causes many women have strong aversions to certain foods and smells, too.
Until one day, you wake with a strangely icky feeling in the pit of your stomach. Sure does feel like it (that, or the worst hangover you’ve ever had).
Well, in these pregnant parts, it’s called morning sickness…and chances are you’ll be bunking with it for the next few weeks. If you’re among the estimated three in four women who suffer from symptoms related to this misnamed malady in the first trimester of pregnancy, you already know the bad news: Although that nauseous, queasy feeling in your stomach often starts when the sun rises, it can hit at any time of the day or night.
BABY’S GROWTH DURING FIRST TRIMESTER During the first trimester alone your baby changes from a single fertilized cell (a zygote), to the embryo that implants itself in your uterine wall, to a peach-sized bundle of growing limbs and body systems. Here are a few of the big highlights happening in this exciting time: Other major first-trimester milestones include the formation of muscles, the production of white blood cells to fight off germs and the development of vocal cords.
CHANGES IN YOUR BODY A lot happens for you in the first trimester, too.