I'm sorry you're bleeding, I hope it stops soon! So far I haven't had that happen and I'm sure I will freak when it does. If you're loosing 1/4 cup of blood once a day, that's probably not going to be too dangerous before you see your Dr. on Monday all though I would be taking iron sulfate to help replace the blood quicker. If it is several times a day then you should check with a Dr. asap.
Keep us informed OK?