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. But by the third month, you're probably beginning to show outward signs of the miracle that's growing inside of you. And you may have gained three to four pounds. The fourth, fifth, and sixth months make up the second trimester. By this time most women are no longer feeling the discomforts of their first trimester and their energy is beginning to return.