My period is usually painful and very heavy but only 5 days. Right now it has lasted almost 3 weeks. It is heavier than usual, painful every day and I have blood clots each time I go to the bathroom. A tampon only lasts about an hour. What's wrong and what do I do. I'm getting really worried.

What are you waiting for? Go to the doctor or the emergency room, now!

This is her sister. Thank you for your comment. I have been telling her the same thing for weeks. Maybe now she will listen.