My menstrual period is 10 days late, but the pregnancy test came back negative. Why is that?

My menstrual period is 10 days late. Although pregnancy tests have been negative, this could be caused by emotional stress, irregular作息 patterns, endometritis, hypothyroidism, or endometriosis. Depending on the specific situation, improvements can be made. It is recommended to seek timely medical consultation at a hospital and receive treatment under a doctor's guidance.

1. Emotional Stress: Long-term negative emotions such as tension, anxiety, and depression can interfere with the endocrine system, inhibit ovulation, and ultimately lead to delayed menstruation. It is recommended to exercise regularly, practice meditation daily, listen to soothing music, and adjust your mindset.

2. Irregular作息 Patterns: Frequently staying up late or having inverted day-night schedules can disrupt the body's normal circadian rhythm, affect the normal secretion of hormones, and consequently interfere with the menstrual cycle.作息 adjustments should be made promptly, aiming to sleep and wake up at the same time daily, avoiding electronic devices before bedtime, and creating a quiet and dark sleeping environment.

3. Endometritis: Invasion of various pathogens into the endometrium causes inflammation, altering the endometrial environment and affecting its normal growth and shedding, resulting in delayed menstruation. This is often accompanied by symptoms such as lower abdominal pain, increased vaginal discharge that is thick and yellowish in color. Patients can follow a doctor's guidance to use medications such as metronidazole tablets, cefixime capsules, and gynecological qianjin tablets to alleviate symptoms.

4. Hypothyroidism: Insufficient secretion of thyroid hormones due to autoimmune issues, surgery, or other reasons can slow down the body's metabolism, affect the endocrine system, and cause delayed menstruation. Additional symptoms may include cold intolerance, fatigue, drowsiness, and weight gain. It is recommended to use medications such as levothyroxine sodium tablets, thyroid tablets, and astragalus membranaceus oral liquid under a doctor's guidance to relieve discomfort.

5. Endometriosis: Endometrial tissue appears in areas outside the uterine cavity. These displaced endometrial tissues are also influenced by hormones, causing cyclic bleeding that interferes with the normal menstrual cycle and leads to delayed menstruation. This condition is often accompanied by progressively worsening dysmenorrhea and infertility. Patients can follow medical advice to use medications such as ibuprofen sustained-release capsules, danazol capsules, and gestrinone capsules to improve symptoms.

In daily life, drinking a cup of warm milk before bedtime can also help improve sleep quality, allowing the body's endocrine system to gradually return to normal and promote regular menstruation.

References:

[1] Tong Mei, Zhou Hongmei, Xu Xiaoxia. Diagnostic value of transvaginal ultrasound combined with red blood cell distribution width and prolactin in endometriosis. Journal of Maternal and Child Health Care of China, 2024, 39(24): 5024-5027.

[2] Fei Meirong, Gan Jianhui, Ding Xiuqin, et al. Clinical study on the impact of timing of treatment for hypothyroidism during pregnancy on pregnancy outcomes and neonatal thyroid function. Journal of Maternal and Child Health Care of China, 2024, 39(23): 4678-4681.