Thanks for query
&vomitting are more common in first trimester & as pregnancy
advances these subside.
To control these problems-
First thing is-take small amount of food at short intervals.Do not take heavy & spicy meal.
If still vomiting
persist you can take doxinate
at night & can increase its dose to 2-3 times a day.
If still you are having vomiting you can take metoclopramide(this drug is widely used in pregnancy with no proven side effects).
can be used in used in pregnancy.Its category B drug means no proven side effects in human being.It can be taken 4-8 mg 8hrly.emeset in morning & doxinate in evening can be take.But its better that you switch on to doxinate,it can be taken till 3-4 months.As your brother was suffering from DMD,this one is Genetic disorder & you should go for chorionic villous sampling at 11 weeks or amniocentesis
at 16-18 weeks to rule out any genetic disorder in your foetus.
Hope I have answered your query.