just curious

[Ilovemybabies12]

Why is it that when your pregnant you have morning sickness or "all day" sickness??

[buggie216]

Progesterone poisoning!!! I had it severe with my first but not with my second...both girls!! Its your body's reaction to the horomone shift which is why it usually (not always) goes away at the end of the first trimester (around 13w) because thats when the next horomone shift occurs...

[steph_ut]

High levels of progesterone is thought to a be a culprit, but so is hCG. Still others say it's an imbalance of progesterone and estrogen. No one *really* knows but it is thought to be hormone-related, and that *typically* it will subside when the placenta starts to take over.

[AnnieBrooke]

Or no sickness, don't forget.  It runs the full range from a person never having morning sickness for one day in her pregnancy, all the way to such severe morning sickness that the person has to be hospitalized (in one life-threatening case my doctor told me about, the woman had to terminate the pregnancy because she was dying or malnutrition).  For the record, my mom had 5 kids and never one day of morning sickness.

I've heard morning sickness called "progesterone poisoning."  Probably some women's systems are more reactive than others to the effects of being pregnant, perhaps to progesterone.  So some women would get sick upon getting up in the morning with the progesterone having built up in their systems all night, and then be done, and others might be sick from it all day.

Hope this answers your question.  I really couldn't tell if you were asking why some women get one thing (morning sick) and some get the other (all-day sick), but I tried to cover the bases.