I'm 17, virgin and i have had my period nonstop for 6 months or more i've lost track.i also get dizzy sometimes . do i have an infection or cancer?

Non stop periods: You need to see your doctor for a check up. You probably are anemic from all the blood loss, but you need to be examined to determine why you are bleeding so much.

Need to be seen: The odds are you have neither cancer or an infection. The most likely cause is a hormonal imbalance that needs to be treated by your physician. The dizziness may come from anemia since you have been bleeding for 6 months. Make an appointment with your physician as soon as possible. Good luck.