First trimester

Hi Mummies, i have had just tested positive for pregnancy few days ago and this is my first pregnancy.. I have a few qns to ask. 1) Is it normal to feel bloated/gassy during this time? As i keep passing out gas. When will it get better? 2) What are the kind of food that i should eat and avoid and food that is highly recommended to consume? 3) Is Maternal Milk a must to drink? 4) When does the feeling nausea/morning sickness starts to come in?