Skip to Content
Home > Wellness > Health Library > Menstrual Cycle
Browse and register for related classes.
During the follicular phase of the
menstrual cycle, the lining of the uterus thickens to prepare for pregnancy. An
egg becomes ready to be released inside a sac (follicle) on the surface of an
ovary. During the luteal phase, the egg is released (ovulation). If the egg is
fertilized by sperm, it may attach to (implant in) the lining of the uterus,
and pregnancy begins. If the egg is not fertilized or does not implant, the
lining of the uterus is shed as blood
during the menstrual
period (below), and the cycle starts over.
ByHealthwise StaffPrimary Medical ReviewerSarah Marshall, MD - Family MedicineMartin J. Gabica, MD - Family MedicineSpecialist Medical ReviewerKirtly Jones, MD - Obstetrics and Gynecology
Current as ofFebruary 25, 2016
Current as of:
February 25, 2016
Sarah Marshall, MD - Family Medicine & Martin J. Gabica, MD - Family Medicine & Kirtly Jones, MD - Obstetrics and Gynecology
To learn more about Healthwise, visit Healthwise.org.
© 1995-2016 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.
Feeling under the weather?
Use our interactive symptom checker to evaluate your symptoms and determine appropriate action or treatment.
250 Pleasant Street
Concord, NH 03301
Share Feedback and Questions
View Quality Data
© 2017 Concord Hospital