Menstrual Period, Late or Missed: References

ACOG Practice Bulletin: Long-Acting Reversible Contraception: Implants and Intrauterine Devices, Number 121, July 2011. Replaces Number 59, January 2005. Reaffirmed 2015.

ACOG Practice Bulletin: Management of Abnormal Uterine Bleeding Associated with Ovulatory Dysfunction, Number 136, July 2013. Replaces Practice Bulletin Number 14, March 2000. Reaffirmed 2015.

Harding M. Missed periods. Patient. https://patient.info/health/periods-and-period-problems/missed-periods. Updated March 17, 2018. Accessed June 2018.

ACOG Committee Opinion: Adolescents and Long-Acting Reversible Contraception: Implants and Intrauterine Devices, Number 539, October 2012. Replaces Number 392, December 2007. Reaffirmed 2014.

Amenorrhea. American Academy of Family Practice. https://familydoctor.org/condition/amenorrhea/. Updated May 24, 2017. Accessed June 2018.

US Department of Health and Human Services. National Institutes of Health. Eunice Kennedy Shriver National Institute of Child Health and Human Development. Amenorrhea. https://www.nichd.nih.gov/health/topics/amenorrhea. Updated January 31, 2017. Accessed June 2018.

ACOG Committee Opinion Number, 702, June 2017. Female athlete triad. https://www.acog.org/Clinical-Guidance-and-Publications/Committee-Opinions/Committee-on-Adolescent-Health-Care/Female-Athlete-Triad. Accessed June 2018.