Ralph Waldo Emerson (1803-1882), perhaps best known for his essay Self-Reliance (1841), was one of America's most influential thinkers and writers. After graduating from Harvard Divinity School, he followed nine generations of his family into the ministry but practiced for only a few years.
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.
Q. How long will my period last? A.Everyone is different. Your period can last between two and seven days. Most girls have it for about five days. Q. What should I do when I get my first period? A. In addition to whatâs covered above, itâs a good idea to have feminine products ready for that first period, and to know how to use them.