June 05, 2012 08:00 AM Eastern Daylight Time. ARLINGTON, Va.--(BUSINESS WIRE)--CACI International Inc (NYSE:CACI) announced today that it has been awarded a $165 million prime contract to support the Department of Defense (DoD) with procurement initiatives through the companyâs Standard Procurement System (SPS).
Updated May 06, 2016. There are two menstrual cycle phases that occur during every monthly cycle. Each cycle begins on the first day you have your period and end on the day before you begin menstruating again. The first phase is the follicular phase, or the proliferative phase. The follicular phase begins on Day 1 of the menstrual cycle. Estrogen and progesterone levels are at their lowest during menstruation.
The first menstrual period is called menarche.. The menstrual cycle is about four weeks long, starting on the first day of bleeding and ending when the next period begins. However, it can vary greatly when a girl first starts her period. It may skip months or come several times per month in the beginning.