Need a workup
Look Eric. You're either hemorrhaging or hemolyzing or not producing red cells.
If one of my first-year medical students was caring for you, he/she would have told me by day 2 which of the three it was, based on elementary labs. Each has several sub-possibilities. If you value your life, get with a physician who's competent and with whom you can communicate. Your not knowing is unacceptable.