Just because you have some of these characteristics does not make you a vampire. You should check these out and make sure that it's not just because of these factors that you are a vampire. Alot more goes into a vampire than black clothes and fangs.
1. Wear Goth styled clothes, have black hair and pale skin, long nails, natural fangs/sharpened canines. Being a vampire has nothing to do with your appearance.
2. Like blood. This might as well be a fetish, which is something you do for pleasure and not for need. Sang vampires need the blood they receive so that their organism will function well.
3. Have a sensitive skin structure and/or sensitive eyes, which means they get easily burnt when exposed to the sun and their eyes hurt under strong lighting.
4. Are psychic/empath. Being psychic/empath does not make you a psy vamp. Psy vamps need the energy they drain to stay healthy. They don’t drain for fun or for whatever other purpose.
5. Like the night.
6. Feel lonely.
7. Are attracted by vampires and/or vampiric folklore.
8. Belong to satanic, witchcraft or religions that have blood rituals. A vampire is not generated by the religion they follow. We can be Christian, Muslim, Pagan, Buddhist, Satanist, Atheist, Mormon, Jew, Protestants or anything else.
This List was obtained via http://www.sanguinarius.org , if you haven't been there yet, do so, it's a good one.