So I've had my period for a whole ass 16 days and still going strong. I called my GYN who can't see…

So I've had my period for a whole ass 16 days and still going strong. I called my GYN who can't see me until Feb 1st. The nurse in office told me to take a hpt which came back negative 😑 so now I really don't know why I'm bleeding to death (exaggeration, but still.)