I am 18. Had my period for 2 weeks and two days and still going. Barely see brown/red spots on my pad. No pills, virgin and no sexual intercourse. Wha?

Irreg cycle. it's common to have an irregular menstrual cycle when a teen. You can skip periods or bleed too much. Exercise and stress can change this cycle. If you continue to bleed many weeks over 3 months, can get on birth control to regulate them better per GYN MD.