Reviewed by Traci
Johnson, MD on
February 16, 2018
IMAGE PROVIDED BY:
Simon Battensby/Photographer's Choice RF
American College of Obstetricians and Gynecologists: "Menstruation in Girls and Adolescents -- Using the Menstrual Cycle as a Vital Sign," "FAQ Especially for Teens: Menstruation," "FAQ: Gynecologic Problems, Premenstrual Syndrome."
Association of Reproductive Health Professionals: "Menstrual Suppression," "Menstruation and Menstrual Suppression Survey."
Center for Young Women's Health, Children's Hospital Boston: "Medical Uses of the Birth Control Pill," "Menstrual Periods."
Chavez-MacGregor, M. Breast Cancer Research & Treatment , March 2008.
Eunice Kennedy Shriver National Institute of Child Health and Human Development: "Endometriosis."
Gollenberg, A. Journal of Women's Health, May 2010.
Halifax Health: "True or False: Women Who Live Together Tend to Have Synchronized Menstrual Periods."
National Health Service, United Kingdom: "Can I Get Pregnant Just After My Period Has Finished?" "Periods, heavy," "Vaginal Bleeding."
National Institutes of Health: "Prior Stress Could Worsen Premenstrual Symptoms, NIH Study Finds."
Nemours Center for Children's Health Media: "Expert Answers On … Is Period Blood Always Red?"
Penn Medicine: "Menstrual Periods -- Heavy, Prolonged, or Irregular."
Society for Menstrual Cycle Research: "Menstrual Synchrony: Do Girls Who Go Together Flow Together?"
University of Arizona Campus Health Service, SexTalk: "Is It Safe to Have Sex During Menstruation?"
University of Maryland Medical Center: "Vaginal Bleeding Between Periods -- Overview."
Office on Women's Health: "Menstruation and the Menstrual Cycle Fact Sheet," "Premenstrual Syndrome Fact Sheet," "Your Menstrual Cycle."
This tool does not provide medical advice.
See additional information.
THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for general informational purposes only and does not address individual circumstances. It is not a substitute for professional medical advice, diagnosis or treatment and should not be relied on to make decisions about your health. Never ignore professional medical advice in seeking treatment because of something you have read on the WebMD Site. If you think you may have a medical emergency, immediately call your doctor or dial 911.
© 2014 WebMD, LLC. All rights reserved.