Bpp ultrasound @ 28 weeks and 4 days

Hi mga mommies. Sino dito may same case like mine? Pinapa bpp/ biometry ultrasound na ko ni ob kasi hindi daw normal yung laki ng tyan ko for 28 weeks pregnant. Baka daw tubig lang laman ng ibang part ng tyan ko. Does too much amniotic fluid ba can harm me or my baby? Thanksmuch sa sasagot.