here I will cut and past
I posted this in another thread, that is why it pays to read other threads that relate to your problem
If you allow a dog to bite in play you are giving them the right to think it is ok to put teeth on people. I see this happen time and time again when they (the owners) freak out because the dog put teeth on them in a manner other than play. It always comes down to dogs that were allowed to mouth. If you give them the ok to put teeth on you in play then it is ok in anger of frustration. Dogs are very black and white animals when you start allowing things in one instance but not another you start to get gray and that causes confusion.
At this age the puppy should not be putting teeth on you at all and if she/he is then you need to step up the correction. My rule with puppies is they are never allowed to put teeth on human skin. Even if they do not put pressure it is wrong and they will get corrected even for the thought of teeth to skin. Then when adults they learn teeth NEVER EVER go on people in anger or play.
If your puppy tries to put teeth on you I would grab the puppy by the scruff and say a sharp "NO!" as soon as the pup stops then praise. if the scruff doesn't stop the behavior then try grabbing an ear and pinching a little. Not to rip off the puppies ear, lol, but enough to cause discomfort and stop the behavior.
Puppies should stop bitting after about 2 weeks if you correct every time.
hope that helps.
also this is a good thread
My Puppy Bites Me - Why do puppies bite?