Every woman is different -- including her periods. Some happen like clockwork. Others are hit or miss and unpredictable. On average, a woman gets her period every 24 to 38 days. A period usually lasts about 2 to 8 days.
You may have irregular periods if:
The time between each period starts to change
You lose more or less blood during a period than usual
The number of days that your period lasts varies a lot
Treatment, You probably don’t need treatment for irregular periods unless they bother you or if you need treatment for another condition that’s affecting your menstrual cycle.