I bite for blood. Am I sick or what?

I tend to bite my lip when im really hungry and bored...... i bite out of boredom...... and basically bite till i bleed...... then i kind of...... suck where i bit so i can.... kind of drink the blood...... im ashamed to admit it...... but i really enjoy it........ i like the taste of blood and after i bite my lip/etc. im not so hungry anymore.... or bored...... it really hurts on the dys when im starving or dying of boredom........ and once my orthodontist got really mad at me because i had a severe sore on the inside of my lip because of my chewing....... i dont really know how to stop...... i want to but...... you know....... i guess ive been convincing myself that pain is worth it but, you know..... when i sit down for a meal and i have a beautiful chicken blt in front of me, but i cant open my mount wide enough, or let any of it touch my sore lip, it's a pain in the butt. so i just endure the pain and eat. anyone have any tips? because, even though i enjoy this sick habit, i need to stop if i am to grow as a person at all in my highschool years. and trust me, i love to eat, and i dont like anything "standing" in the way of me and food, lol....... but anyways, i would really apreciate stories of people who can relarte, or solutions from others who have overcome this sick habit. :)
haha, i forgot to restate my basic question at the end: it it sick/wierd to like the taste of blood? if someone could relate it would make my burden so much more light :)
any1? :(((
It is...not normal, but neither is picking your skin for hours on end, so we are in the same boat. Recently i have managed to overcome my picking, and so i belive that you can aswell. However, you have to really relize it isnt worth it. Hurting yourself cannot be justified. You CAN stop, i belive that with every atom of me, but you need to really try. Not just for you, but for everyone around you. :) When you find yourself doing it, wear a rubber band that you snap when you catch yourself, or, (if your a girl) apply lip gloss constatntly to make your lips taste odd and be slippery, harder to grip. Things like that may help. :)
For information on the skin picking disorder (Dermatillomania), symptoms, causes and treatment methods, get the Complete Guide to Skin Picking Disorders.