Well I'm only 19. I'll be 20 in a few months. Well I got my period on Friday and I usually go only 3-4 days on my period. It is now Wednesday and I am still on my period. It's still bleeding like I'm on the second day of my period. What could this be caused by and should I see a doctor? I am married and I am sexually active. Could you tell me what is going on??

You could just be having and "off" period. It happens once in a while when we get one that is longer than usual or one that is shorter than usual. I don't think it's anything to concern yourself over yet. If it goes on for two weeks or more you should check with your doctor.