J.P.
You described me as a teen. My hemeglobbin dropped to 5.6 and I needed a trnsfusion and then later, when it dropped tp 6.9 I was put on the pill. My first advise is, get diagnosed. The er docs never told me what was causing the bleeding, they just treated me. My family and I never even thought to ask, duh! I was on the pill for a year (Ortho Novum) which was a miracle for me. I actually felt normal and was worried about never knowing when my period would strike, how bad it would be or where I would be. I went off the pill for over a year and while my perior wasn't normal cylce wise, the amount was. I went back on birth control until my hubby and I were ready to start trying to conceive. My doc warned me that wihout knowing the reason for my bleeding, she was not sure if I could have kids - which I had been prepared for that possibility since I was a teen. We got pregnant on the first try (thank God!). Good luck! Don't give up and keep pushing the docs to help her.