hi pibymummy, i found this online:
At least one fourth of all pregnancies do not involve morning sickness. Approximately 50 to 75 % of pregnant women experience a period in early pregnancy with nausea, and about 30% also experience vomiting.
Some studies have shown that you are more likely to have morning sickness if:
• You have a history of migraines.
• You had nausea and vomiting in a prior pregnancy.
• You have a medical history of negative side effects of nausea and vomiting from trying birth control pills. Some women have this response to higher estrogen levels.
• You tend to have motion sickness.
• If your mother or sisters have had morning sickness, there are studies to suggest that there is higher chance you will, due to a genetic predisposition.
• One study found that you are 50% more likely to have morning sickness with severe nausea and vomiting if your baby is a girl.
• You have twins or other multiples. There are higher levels of pregnancy hormones in your system when carrying twins, which also can make it so the symptoms are worse than average in some women. But it is not universal, some mothers of twins have no nausea or vomiting at all.
So far i only throw up water when i brush teeth in morning, but who knows i may be late in getting MS. my fren had a girl and her MS was non existent.. so the above not true all the time