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A 26-year-old female asked:

is it normal to have very large blood clots during period? period lasts 3 days. obgyn ultrasound, annual routine all normal, annual physical normal

1 doctor answer4 doctors weighed in
Dr. Wayne Ingram
Specializes in Obstetrics and Gynecology
No: Large clots occur when there is arterial not venous bleeding during the period which is not normal. A sub mucous uterine fibroid can cause such an event and it is not usually discoverable by ultrasound rather via a procedure called hysteroscopy. See a GYN MD for further evaluation.

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Last updated May 11, 2019

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