Pregnancy Week by Week

Pregnancy Week 12

When you are 12 weeks pregnant, you may take on that "pregnancy glow." You may also notice other changes, such as:
  • A decrease in morning sickness
  • An increase in energy levels
  • Headaches and lightheadedness (due to the increase in blood volume or lack of protein).
By this time, your baby is about 2.5 inches long and weighs approximately 0.3 to 0.5 ounces.
Some fetal developments that usually occur during week 12 of pregnancy include the following:
  • The gallbladder secretes bile from the fetus
  • The lungs are now completely formed
  • The thyroid gland and pancreas are now complete
  • The liver functions to make blood cells.
(Click 12 Weeks Pregnant for more information.)

Pregnancy Week by Week: 13 Weeks

When you are 13 weeks pregnant, most of your early pregnancy symptoms should subside. You may begin to experience abdominal pain (stomach pain) as your uterus stretches to accommodate the growing baby.
Your baby is now about 2.6 to 3.1 inches long, from crown to rump, and weighs in at about 0.5 to 0.7 ounces.
In addition to a healthy diet, make sure you are getting enough of the following vitamins and minerals:
These will likely come in the form of prenatal vitamins, which your healthcare provider can give you a prescription for.
Examples of fetal development that occur when you are 13 weeks pregnant include the following:
  • The appearance of fingernails
  • The beginnings of fingerprints and footprints
  • The appearance of tooth buds for all 20 baby teeth
  • The start of vocal cord formation
  • The development of the trachea, lungs, stomach, liver, pancreas, and intestines into their final functioning form.
(Click 13 Weeks Pregnant for more information.)
Pregnancy and Pain

Week by Week Pregnancy

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