Acne at your age are very common.
Don't worry regarding the same. Start applying clindamycin cream in the day and benzoyl peroxide in the evening for the same along with doxycycline capsules 100 mg twice daily and you will be all fine within 10 days. Revert back for the same with the improvement.
Next Steps
Start above treatment asap
Health Tips
Avoid oily food and cosmetics