I am so sorry that I cannot give you any suggestion because I am having a same problem with you! My 13 months old daughter just about to hit me or she will bite herself if I say "no" when she did something wrong. She is REALLY cranky recently, I dont know if she is teething but I couldn't find any new teeth cutting out. Also , she was a happy baby but not now, easy to get mad and cry...........she make me feel really bad these few days!
I am really frustrated as I took Tiffany to a playgroup this morning. One baby was play a toy phone and Tiffany go and take that phone from that baby, you know what, she hit the baby's face after that!!!!! I was SO embarrassing and keep saying sorry to the baby's daddy. Ooooo.......... what can I do???? I feel so BAD that my girl did something like that!