# data[].attributes.body
uterus lining breaks down and menstruation occurs.

# data[].attributes.body
The ovaries release the female hormones estrogen and progesterone . These hormones cause the lining of the uterus (or womb) to build up. The built-up lining is ready for a fertilized egg to attach to and start developing. If there is no fertilized egg, the lining breaks down and bleeds.

# data[].attributes.body
lining of the womb thickens

# data[].attributes.body
Ovulation occurs, usually on day 14.

# data[].attributes.body
The uterus lining detaches leading to menstruation.