17 year old nonsexual female, hasn't gotten period in 46 days, normally period cycle 35-38 days. i am underweight, i weigh 105 and i'm 5"5. can being underweight a little, affect my period cycle or should i be concerned it's something more serious?

Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.