In-Home Pregnancy Tests: Your Questions Answered
How Does a Pregnancy Test Work?
How Soon After Conception Is the Test Effective?
How Do I Use an In-Home Pregnancy Test?
How Accurate Are They?
Other Possible Causes of a Missed Period
- Birth control pills—Some women who use this form of contraception may not have periods. In addition, stopping your birth control pills can lead to 3-6 months of missed or abnormal periods.
- Breastfeeding—Although this can cause missed periods, you can still get pregnant without periods when you are breastfeeding.
- Medicines—Certain drugs can cause changes to your monthly cycle. When you are prescribed a new medicine, ask your doctor about possible effects on your menstrual cycle.
- Illness—Some illnesses can disrupt your period. Once you are healthy, you should return to your normal cycle.
- Eating disorders, malnutrition, and low body weight—These may cause a decrease in the production of estrogen. Inadequate estrogen production can result in your menstrual cycle stopping.
- Excessive exercise—This can disrupt the production of hormones and stop menstruation.
- Menopause—As you near menopause, your period will become irregular and eventually stop.
American College of Obstetrics and Gynecologists http://www.acog.org/
National Women's Health Information Center http://www.womenshealth.gov/
The Canadian Women's Health Network http://www.cwhn.ca/
The Society of Obstetricians and Gynaecologists of Canada http://www.sogc.org/
Diagnosis at home: pregnancy tests. Scientific American. November 2000.
DynaMed Editors. Pregnancy testing. EBSCO DynaMed website. Available at: http://www.ebscohost.com/dynamed. Updated June 9, 2010. Accessed June 28, 2012.
How do I know if I'm pregnant? Journal of the American Medical Association. October 10, 2001.
Home pregnancy tests: how accurate are they? Archives of Internal Medicine. Vol. 7, No. 5.
- Reviewer: Brian Randall, MD
- Review Date: 06/2011 -
- Update Date: 06/28/2012 -