At week 33, {{ PRONOUN_BABY }} officially has {{ PRONOUN_HIS_HER_LOWER }} own immune system. But your antibodies continue to be passed on to your baby and are helping to prepare {{ PRONOUN_HIM_HER_LOWER }} for all of the germs in the outside world.
![](https://assets.oviahealth.com/wp-content/uploads/2023/12/article_109219_week-33_s_640_533.jpg)
At week 33, {{ PRONOUN_BABY }} officially has {{ PRONOUN_HIS_HER_LOWER }} own immune system. But your antibodies continue to be passed on to your baby and are helping to prepare {{ PRONOUN_HIM_HER_LOWER }} for all of the germs in the outside world.