Are there any specific Kashrut laws or exceptions for pregnant women? The question stems from the fact that gestosis may cause many problems with dietary laws and eating habits and can even make a woman unable to eat anything except 1-2 specific food or products a day due to vomiting or serious sickness.
Pregnat women, like any weak or sick person, are obligated to the Halachot of Kashrut, but may forgo certain stringencies if they cause great distress. For instance, if one is unwell, it is permitted to wait less than 6 hours between meat and milk, even if 6 hours is the person's custom, as there are other customs as well. A Rabbi should be consulted about the specifics of any situation.