You devide your 3 meals into 6 meals.  Take Small small meals in every  2 hrs.if more nausea and vomiting  sensation  take dry toast or biscuits. Don't  replace meals with juices.rather take direct fruits then juices. Avoid papaya and pineapple. Any medicine you need ask gynaecologist. Don't take fried ,fatty and junk food. Avoid  food from outside.