This could possibly point towards stomach infection. Since, you are pregnant, you must take great care not to stay in unhygienic surroundings. You did a good thing by moving out. If you are having vomiting then it must be brought under control first through medications prescribed by your doctor. Avoid strongly flavoured foods like cabbage, onions etc. which may make you feel nauseous. Have a glass of lemon water with sugar or suck on lemon slices when you feel uneasy due to vomiting sensation. For diarrhoea, make sure you do not get dehydrated. Prepare home made ORS or Oral Rehydration Solution by adding a teaspoon of sugar and a pinch of salt to a glass (200 ml) of boiled and cooled water. Take this solution every 2 hours if you have persistent diarrhoea. Have dry toast, cooked rice, ripe bananas and applesauce for controlling diarrhoea. Do not drink milk as it can worsen diarrhoea. Instead go for curd or buttermilk which is helpful in treating diarrhoea. Drink plenty of fluids like glucose water, lemon water with sugar, freshly squeezed fruit juices prepared at home in a hygienic manner. Avoid any fried or spicy food, harsh fibrous fruits and vegetables. You can have potatoes but do not have any raw foods till diarrhoea is well in control. Take care and get yourself treated by a physician as soon as possible.