See a healthcare professional to rule out pregnancy, thyroid issues, PCOS, high prolactin, premature ovarian insufficiency, and other causes
If you are underweight or have lost weight, increase calorie intake and aim for gradual weight restoration
If you exercise intensely, reduce training volume and intensity
Manage stress with sleep, rest, therapy, meditation, or other stress-reduction methods
Eat regular meals with enough carbohydrates, protein, and fats
Avoid restrictive dieting, fasting, and skipping meals
Treat eating disorders with professional support
Track your cycle and symptoms
Review medications with a clinician if they may affect your period
Address excessive body fat loss or gain with a clinician-guided plan
Correct iron deficiency or other nutritional deficiencies if present
Get evaluated if you have no period for 3 months or more, or sooner if you are pregnant, have severe pain, or have other concerning symptoms