Yes, but the nutrients taken up by your foetus is self regulated based on the foetus biological requirement.
Guidelines for every mother to observe -
1, Take nutrient rich food to ensure balanced nutrients for foetus
2, Avoid excess calorie intake, particularly if u r obese or diabetic
3, Avoid using processed vegetable cooking oils
4, Eat smart brain foods that provide smart brain fats to your foetus developing brain & nervous system
5, Try to eat as much organic food as u can