I'm almost 18 in 3 days on July 4th, and I started my period when I was 13. Last weekend I started my period and it was very light. It lasted for the whole week. I didn't have my period for one day then, I started my period again and its clotting and very heavy, I've lost A LOT of blood, I HAVE TO CHANGE MY TAMPON EVERY 15-20 MINUTES, I feel like fainting and dizzyness. I have no insurance to see a doctor a any money.:( What should I do?