Hi there
I am afraid that nobody can tell you what is causing your symptoms over the Internet. You will need to be seen by a doctor.
Did you experience any other types of symptoms such as a discharge? Was there any odor? Could the blood have been related to menstruation? Is it possible that you have a yeast infection or a urinary tract infection? Have you been having unprotected sex? Is there any way that you or your partner have an STD?
There are too numerous of possibilities to guess. Please see a doctor to be properly diagnosed and treated.
Thank you for your question.
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