Your physician will probably elect to start you on prenatal vitamins to make sure you're getting all the necessary supplements and nutrients you need to have a healthy baby. However, vitamins and other nutrient supplements should only be used under the advice of your physician. Consult your obstetrician before using any commercial vitamin or supplement. It's also very important to talk with your doctor or other health professional before you start or continue any exercise program. During these early weeks your baby's neural tube, which becomes the brain and spinal cord, the heart, digestive tract, sensory organs, and arm and leg buds are already beginning to form, so your body is changing rapidly to accommodate the growing person inside of you.
Most women experience a great deal of fatigue during their first trimester.
You may also be experiencing morning sickness, or nausea that can happen at any time. The nausea is linked to changing blood sugar levels, so by eating several small meals throughout the day, you can regulate your blood sugar and decrease your nausea. Nibbling on healthy snacks like saltines and gingersnaps will help to ease your upset stomach. Every woman is different and each pregnancy is different. The amount of weight gain will vary for each woman and each pregnancy.