1.6 G Irregular Periods during teenage:

During the first year or two following menarche, a girl may have her period at irregular intervals. Then after a pattern is established. So young teenager should not worry much even her first few periods are longer than two to three months. After a year or two normal pattern of monthly cycle will get established.

A change in environment or routine or any emotional stress or illness may upset the cycle, causing the period to begin later or earlier than expected:
· A girl may become overly anxious about an exam at school.
· Other girl may be excited about a forthcoming vacation, or she may be distressed about moving to a different town.
· Another girl may have lost or gained weight in a short period of time.
· Yet another girl may be getting ready for major sports or dance event, requiring intensive exercise.
All of these above situations can disrupt a regular menstrual cycle.

It is also common for young girls to menstruate without ovulating for the first few years after menarche. This may explain why some teens who do not experience cramps or premenstrual discomfort in initial year, may begin to experience after menstruating for few years.

The release of progesterone following ovulation may contribute to these symptoms. Girls can acquire an understanding of their own cycles by keeping a personal calendar and marking off the days when their period occurs. After several months, they will have definite idea of how long each period lasts and the length of their cycles.