17 years old, bleeding from the lower part but not like a menstrual period—what could be the reason?

Under normal circumstances, bleeding in individuals under 17 that is not typical menstrual flow may be caused by ovulation bleeding, menstrual disorders, vaginitis, cervicitis, or dysfunctional uterine bleeding. If the bleeding persists or is accompanied by discomfort, it is recommended to seek timely medical evaluation at a正规 hospital. Detailed explanations are as follows:

1. Ovulation Bleeding

During ovulation, a temporary drop in estrogen levels causes the endometrium to lose hormonal support, leading to slight shedding and minor bleeding, which usually lasts 2–3 days. It is important to get adequate rest, avoid fatigue, maintain good external genital hygiene, change underwear frequently, and avoid strenuous exercise.

2. Menstrual Disorders

At age 17, ovarian function is not yet fully stable. Irregular sleep patterns, dieting, and other factors can easily disrupt hormone balance, resulting in non-menstrual period bleeding. Maintain regular sleep habits and avoid staying up late, eat a balanced diet rich in protein, and avoid binge eating or excessive dieting.

3. Vaginitis

Bacterial or fungal infections of the vagina cause inflammation, leading to mucosal congestion, damage, and bleeding, often accompanied by itching and abnormal odor. Treatment under medical guidance may include metronidazole vaginal suppositories, clotrimazole suppositories, or nitrofurantoin-nystatin vaginal soft capsules. Avoid tub baths during treatment.

4. Cervicitis

Infection of the cervix by pathogens leads to inflammation. The cervical mucosa becomes fragile and prone to bleeding, often accompanied by increased vaginal discharge. Under medical supervision, medications such as cefuroxime axetil tablets, azithromycin dispersible tablets, or doxycycline hydrochloride tablets may be prescribed. Keep the external genital area clean and dry.

5. Dysfunctional Uterine Bleeding

Hormonal imbalances cause abnormal uterine bleeding without organic pathology, typically presenting as spotting outside the menstrual period. Under medical guidance, treatments may include estradiol valerate tablets, progesterone capsules, or dydrogesterone tablets. In severe cases, diagnostic curettage may be performed.

In daily life, choose cotton, breathable underwear and change it regularly; avoid unhygienic sexual practices and maintain a single sexual partner; avoid strenuous exercise and cold or raw foods during menstruation; and undergo regular gynecological check-ups to maintain reproductive health.