During your first trimester (first 12 weeks of pregnancy), your baby grows to about three inches and weighs about one ounce. Your baby's heart, brain, spine, lungs, ears, eyes, hands, and other organs are formed and its heart begins to beat. By the end of the first 12 weeks, your baby is completely formed.

During this time, you may urinate more frequently and feel sick to your stomach. Your breasts may be sore, and you may have an increase in white vaginal discharge. These are all normal changes in early pregnancy.

Nutrition and Exercise

• Try to have a caloric intake of 2200 calories/day
• Eat a well balanced, healthy diet with adequate fiber to promote baby’s growth and your energy and comfort
• Take prenatal vitamins as prescribed
• Avoid using alcohol and tobacco
• If you are nauseous, eat small frequent meals to maintain good nutrition
• Many women can continue to exercise regularly
• Daily exercise that suits your level of fitness can help decrease fatigue and stress
• Discuss your exercise habits with your health care provider
• Avoid overheating and maintain good hydration during exercise