Physically, you will start to feel less nausea and less tired. It is still best not to exert yourself but do everything in moderation. You will see your energy levels increase, now would be a good time to implement an exercise program such as low impact aerobics or yoga. By starting a moderate exercise program you can stay healthy during the pregnancy. Exercise during the pregnancy will also help your body recover quicker than someone who did not exercise.
Baby’s Development
As you enter into the second trimester, the baby is growing quickly in the 12th week of pregnancy. The brain will start producing hormones and the nerve cells are multiplying very quickly. The baby will start to suck and swallow food. The kidneys will start to actually produce urine as opposed to amniotic fluid. If things are progressing the baby will grow in size and in length.