This could be bleeding related to sex. Many girls will bleed for a couple of hours after having sex.
If this bleeding continues for an extended period of time (like yours has) or causes pain, a doctor needs to be consulted.
The best thing you can do for your body is see a doctor. You'll need to start seeing a gyno now that you have lost your virginity anyway, so hurry up and make an appointment.
Attention: NOTHING on this site may be reproduced in any fashion whatsoever without explicit consent (in writing) of the owner of said material, unless otherwise stated on the page where the content originated. Search engines are free to index and cache our content. Users who post their account names or personal information in their questions have no expectation of privacy beyond that point for anything they disclose. Questions are otherwise considered anonymous to the general public.