Have a heavy flow? Your body may be trying to tell you something.
"Your period is your barometer," Dr. Masterson says. "A heavy flow can be a marker of uterine fibroids, which are benign growths on the uterus, or thyroid problems or hormone irregularities. It's really important if your periods are heavy [meaning more than a pad an hour], if you're flooding [meaning bright red blood that just doesn't stop], if you have large clots, call your ob-gyn."