Gastroenteritis -- diarrhea caused by bacteria from our foods -- peaks in the summer but can occur all year. This is common all over southeast Asia, especially during the summer months as bacteria thrive in the heat. Expats can easily get gastro from street food vendors, but even 5-star restaurants aren't immune from this if the staff and cooks aren't using proper bathroom and food handling protocols. Pregnant women have the same risks of infection and should be especially choosy about where and what they eat, since a bad bout of "gastro", while usually not serious for mom, can sometimes cause serious problems for her baby. Most infectious causes don't directly affect your baby, but specific bacteria like listeria and salmonella can directly cross the placenta and cause harm. You should see your doctor quickly if you have more severe symptoms such as fever, bloody diarrhea, dehydration, or any changes in fetal movement. Fortunately, those more severe cases are not common, and most pregnant women can get through those uncomfortable days with simple home remedies and foods, as well as a few safe over-the-counter ("OTC") medicines. The most important goal is to stay hydrated, as you can quickly lose a lot of water from vomiting and diarrhea. You shouldn't only drink water because it doesn't really replenish your body's needed salt and sugars, which is why the best options are the Oral Rehydration Salt packages available in local clinics and pharmacies. Those of you who are nauseous and throwing up