Period to the present has not come yet about 40 days now have a waist acid is not a sense of knowledge has

Not normal menstruation, there are a variety of circumstances.
1, pregnant
2, the spirit of pressure, such as: work pressure, family pressure and so on, leading to endocrine disorders.
3, diet containing toxic substances, or the male hormone estrogen, leading to endocrine disorders.
4, not the law of life, leading to endocrine disorders.
But also to look at specific hospitals.