Amy, please think about this just a little more before you make up your mind.
I'll respectfully go against the grain here and say that I really think biting your child is NOT the answer to stopping biting.
I know all about biting and getting kicked out of day care, etc. I worked at a small day care and we really couldn't afford to kick any kids out if you know what I mean. So the director tried MANY things for this sweet little boy who was SUCH a biter.
I'll tell you, I quit that daycare and reported the director to the State because she was biting little Mr. O when he would bite. I was so horrified. Not only did she step over her boundaries....that is NOT an acceptable form of punishment!...but it's also just mean IMO.
I mean, if your little man threw a toy at you and hit you in the eye, would you throw a toy back at him?
If he slapped you in the face, would you do that back?
Now I'm not anti-spanking. I believe the punishment for a child has to be different for each child and different for each infraction. Nathan...I barely swatted his butt 3x in his entire life...Naomi is a little fiestier and I have to smack her hand all the time to stop her from touching the stove, the outlet, etc...
I just don't think biting your child is the right answer when there are so many other things to try first. I mean, you said it yourself...because he's bitten you, sometimes you feel afraid of the cutest person on the planet...well do you want him to feel that away about you? Another poster said that she has anxiety over her child biting her. Well if you bite back, he could have anxiety over this too. It could not only NOT solve the problem but it could make it worse!!! I mean, you're an adult and have the emotional maturity to process that he didn't really want to hurt you. He's just a little guy who shouldn't be afraid of mommy biting him.
Here are some resources I like for biting. I did a little research when little Mr. O was in my classroom.
This is my favorite:
http://www.naturalchild.com/guest/linda_passmark.html
http://www.reallifesolutions.net/family/toddler-biting.html
http://ceep.crc.uiuc.edu/poptopics/biting.html
((hugs)) to you. This is a tough thing to go through but don't knee-jerk react. Just because some parents say it's okay to punish your child one way doesn't mean you don't want to do your research and think it through! I wouldn't bite my child unless I had exhausted ALL other options and seen a developmental pediatrician.