Month 1: By the end of the first month, the embryo has a head and a trunk. Features are beginning to form as well as limb buds that will grow into arms and legs. The heart forms and begins beating on the 25 day.
Length: 1/2 inch
Weight: Less than 1 oz.
Your baby is the size of an apple seed.
Month 2: All major body organs and systems are formed, although not completely developed. The heartbeat can be detected and the first bone cells have appeared. Ears, ankles, wrists, fingers and toes are developed.
Length: 1 inch
Weight: less than 1 ounce
Your baby is the size of a kidney bean
Month 3: Hair is beginning to form on the fetus’ head. Kidneys develop and produce urine. Organs will continue to mature and the fetus will gain weight.
Length: 4 Inches
Weight: over 1 ounce
Your baby is the size of a lime or a baseball
Month 1: You have missed your period or it may have been very light. You may not notice any other differences yet, but the hormones progesterone and estrogen are being produced in increasing quantities. You breasts are slightly enlarged and tender, and you nipples have become more prominent. You probably urinate more.
Month 2: The total volume of blood in our body increases to accommodate the growing fetus. Your breasts are still tender. You may be experiencing some discomfort as your body adjusts.
Month 3: Your waistline will begin to disappear as you gain weight. You may need to purchase a larger bra and maternity clothes.