My period is 7 days late, but the pregnancy test shows I'm not pregnant.

Generally, if menstruation is delayed by 7 days and a pregnancy test shows negative, it may be related to menstrual cycle fluctuations, short conception time, endocrine disorders, endometritis, polycystic ovary syndrome (PCOS), or other factors. It is recommended that patients promptly visit a hospital, undergo necessary examinations, and follow medical advice for treatment. Specific analysis is as follows:

1. Menstrual Cycle Fluctuations: Women's menstrual cycles are not entirely fixed and may be influenced by emotions, environment, stress, and other factors, leading to delayed periods without actual pregnancy. Usually, no special treatment is required; observation and waiting are sufficient, along with attention to adjusting sleep patterns and mental well-being.

2. Short Conception Time: If conception has occurred recently, a pregnancy test may not yet accurately detect the pregnancy. It is recommended to wait a few days and repeat the test, or go to the hospital for a serum HCG test to confirm pregnancy.

3. Endocrine Disorders: Long-term sleep deprivation, excessive fatigue, and high mental stress may lead to endocrine imbalances, affecting the menstrual cycle and causing delayed menstruation without pregnancy. Symptoms may include irritability and rough skin. Patients should, under medical guidance, use medications such as Qizhi Xiangfu Pills, Wuji Baifeng Pills, or Zhenyuan Tablets to aid recovery.

4. Endometritis: Poor personal hygiene may allow bacteria to enter the uterus through the cervix, causing endometritis. This can lead to delayed menstruation accompanied by lower abdominal pain and increased vaginal discharge. Patients need timely treatment with antibiotics such as Roxithromycin Capsules, Cefuroxime Axetil Granules, or Azithromycin Tablets, following doctor’s instructions.

5. Polycystic Ovary Syndrome (PCOS): Genetic factors or excessive body weight may contribute to PCOS, disrupting ovulation and the menstrual cycle. Symptoms may include acne, hirsutism (excessive hair growth), and obesity. Patients are advised to take medications such as Combined Valerate Estradiol Tablets, Dingkun Dan, or Dydrogesterone Tablets under medical supervision to alleviate symptoms.

In daily life, maintaining a pleasant mood and avoiding extreme emotional fluctuations is important. Additionally, regular rest and avoiding excessive fatigue are recommended.