Reassurance is what you need as a woman's description of blood loss is not always an accurate description of urgency of treatment......I do not suggest that is the case with you, but please do not panic.
Clots are more debilitating than actual blood loss and you haven't mentioned the presence of clots.
I am not sure that your GP can be of much help here and i would support your suggestion of ..."riding it out"....see what happens.
If you feel "down" weak and tired at the end of this period than go to see your GP after it has finished and blood tests will give a good indication of how much blood you have actually lost.
Sooner or later it will be a decision re. hysterectomy.
Blood loss looks frightening, but is not always as bad as it appears.