Long period (daughter)

Danielle • Just here to track my periods.
So today I had took my daughter to another DR cause her period has been lasting 30 days and her original DR told her it was normal however she has been passing large clots this is her 4th and longest one since she started back in Feb. she had a ultrasound done and they found she has a large amount of fluid in her Uterus which she should not have at all she is 11 years old just wondering if anyone else has ever had this happen to them ? 😕