What happens at week 25 to 28? This is the start of the third and last trimester at week 28. It is the time to start making plans for the baby’s birth and think more about what your life will be like after your baby is born. You continue gaining weight and baby is growing. By Body Belly Baby|2023-12-21T07:43:25+00:00December 21st, 2023|Changing Body| Share This Story, Choose Your Platform! FacebookXRedditLinkedInWhatsAppTumblrPinterestVkXingEmail About the Author: Body Belly Baby