My daughter is 16 years old, the last 2 months she has been getting her period every 2 weeks. who should i see, what could be the reason?

Irregular periods: Most of the time, an irregular period is caused by an imbalance of hormones, particularly estrogen and progesterone. Start with her regular family Dr. They can do an initial assessment/run labs. They can also refer her to a gynecologist who can do a more in depth study of her irregular periods. If the problem is hormonal, they may suggest having her start hormonal pills to regulate her period.

Common: I agree with Dr. Kratzberg. Also, depending on when your daughter's first period was (if it was recent), irregular periods can be quite common...even for the 1st 2 years. Other factors affecting hormone levels are stress and anxiety, so all of this should be discussed with her doctor.