Including DHA in your diet is essential for your baby's normal brain, eye and vision development, especially during the last trimester. This may be one reason why premature babies are particularly at risk of eye and brain damage.

Besides, here is a list of essential Nutrients & Vitamins for Pregnancy:

Vitamin D - Helps body use calcium and phosphorus; promotes strong teeth and bones
Vitamin E - Helps body form and use red blood cells and muscles
Vitamin C - An antioxidant that protects tissues from damage and helps body absorb iron; builds healthy immune system
Thiamin/Vitamin B1 - Raises energy level and regulates nervous system
Riboflavin/Vitamin B2 - Maintains energy, good eyesight, healthy skin
Vitamin B3 - Promotes healthy skin, nerves and digestion
Vitamin B6 - Helps form red blood cells; helps with morning sickness
Folic Acid/Folate - Helps support the placenta, and prevents spina bifida and other neural tube defects
Calcium - Creates strong bones and teeth, helps prevent blood clots, helps muscles and nerves function
Zinc - Helps produce insulin and enzymes