Hello po. Vaginal, pelvic, or lower abdomen pressure is common in all three trimesters of pregnancy po. Continuous po kasi nageexpand ang uterus ng pregnant women to accommodate growing baby. But please take note and kindly ask your daughter if PRESSURE and not menstrual cramp-like pain ang naffeel nya. That’s different po. Pain similar to menstrual cramps may mean nakakaffeel sha ng early contractions. Need po agad inform si OB if ganun.