Wax gourd is a cool food, so you can only eat less.
Such as purslane, cucumber, wax gourd, bitter gourd, vegetable melon, bamboo shoots, etc., are all cold foods, and eating more will cause gastrointestinal discomfort or breast-feeding for nursing mothers.
Basically normal diet, as long as it is not spicy, alcohol, tobacco, greasy, high-sugar, high-salt food, pregnant women can eat.
But eat in moderation, don't overdo anything, have balanced nutrition, and eat meat, eggs, milk, vegetables, fruits, fish and grains.