25 weeks

The fetus makes breathing movements, but there is no air in the lungs yet. Hands are active and muscle coordination is such that they can get a thumb into the mouth. Thumb sucking calms the baby and strengthens the cheek and jaw muscles.

The fetal brain scan will show response to touch. Touching and playing with the baby is possible now, as they may respond to your touch through your belly wall. Brain growth continues with brain wave activity for the visual and auditory systems starting to develop. Baby is probably very active in the womb, as the most active weeks are typically between weeks 24 and 28.

You may begin feeling your belly tighten and relax at odd moments or irregular intervals. These are Braxton Hicks contractions. They are painless and help the uterus prepare for the birth. Many babies have developed a predictable routine for sleep and active periods. Twins may have entirely different routines from each other.

If your back is feeling the strain of your growing belly, try doing some pelvic rocks to relax it. Stand with your back against the wall, knees slightly bent. As you inhale a breath, press the small of your back against the wall. Exhale and relax your back. You may be experiencing shortness of breath as the uterus is very close to the rib cage at this stage. Some moms are not able to fully expand their rib cages; however, this does not negatively affect the baby in any way.

This week marks the end of month six, which is the last month of the second trimester. The baby is now the size of an eggplant or a size 13 workboot!