Its only a matter of choosing the right foods and switching them in place of existing foods that don’t serve you during pregnancy.
Fast foods like chips and fried foods are very tempting and may satisfy your hunger but they provide empty calories and should be replaced by nutrient rich foods of your choice
Diet drinks contain aspartame along with empty calories and zero nutrition and should be avoided like the plague
Certain fish may contain mercury and you should be sure that the fish you consume is from unpolluted sources
Sweets with refined sugar are like poison to your system and provide no nutrition whatsoever