Not typically, but... Menstrual activity, including the duration & amount of bleeding, related discomfort, emotional symptoms, & the cycle itself -- is a complex phenomenon, that can be affected by many variables. One variable could be stress. More often however, stress results from period problems, including excessive bleeding. Don't assume it's stress causing heavy flow -instead, have a gynecologist check you out.
Flaxseed. There is a role for flaxseed in hormonal balance and cardiac health.