Week 31 means major development in {{ PRONOUN_BABY }}’s brain and nervous system. You may notice increased movement as {{ PRONOUN_BABY }} tests out {{ PRONOUN_HIS_HER_LOWER }} five senses.
![](https://assets.oviahealth.com/wp-content/uploads/2023/12/article_109217_week-31_s_640_533.jpg)
Week 31 means major development in {{ PRONOUN_BABY }}’s brain and nervous system. You may notice increased movement as {{ PRONOUN_BABY }} tests out {{ PRONOUN_HIS_HER_LOWER }} five senses.