My little one is 9 months old and for the past few days she has learned to scream whenever she gets upset. She tries to bite me whenever I tell her no (unbeleiveable) she screams and literally grabs me by whatever is closest to her to pull me down to her face and bite me. Of corse I say no and don't let her bite me but I'm in shock. No one has taught her this. Is anyone else going through something similar? Am I doing something wrong?