Abnormally Short Menstrual Cycles: Causes and When to See a Doctor

Having two menstrual cycles just days apart is not normal. Typical cycles range 21–35 days (average 28). Frequent short cycles warrant medical evaluation.

Potential Causes

• Hormonal Imbalances: Estrogen/progesterone fluctuations.
• PCOS: Irregular cycles, high androgens, ovarian cysts.
• Thyroid Disorders: Hyper- or hypothyroidism disrupt cycle regulation.
• Early Pregnancy Loss/Chemical Pregnancy: Withdrawal bleed followed by true period.
• Medications/Hormonal Contraceptives: Can alter cycle timing.
• Stress/Lifestyle: Chronic stress, extreme exercise, weight changes.

Consult a healthcare provider for diagnosis and management to ensure reproductive health.