Rapid growth. Wk 25 is near the end of the 2nd trimester, and usually it becomes obvious that your pregnant. Other people, including strangers begin to make comments which are sometimes fun and freq annoying. If you did not get your 1 hr glucose test last week (24 wks), it's due this week. You drink a sugar drink and a hr later get a blood test to rule out diabetes in preg.
I suugest you ask yo. Your OB doctor , hopefully you are seeing a doctor or a midwife and are going to have a vaginal delivery in the hospital, there is nothing special you should expect except that your fundus will keep growing, if you are having a specific symptom, call your OB just like i expect my pts to call me so they do not ahae to ask these questions online.