OK so it doesn't exactly hurt - but I am not sure how to handle.
I think it is down to frustration usually. Toy not cooperating - smack Mummy. Not getting own way - smack Mummy again. Ocassionally I think she does it to get my attention if I am busy doing something.
She knows it is wrong. If I tell her off she then says "gentle patting" and will pat gently to make it better (unless she is really in a temper).
DH thinks we should ignore it altogether. Any suggestions? I'm also 3 mths pg so want to nip aggression (esp towards me) in the bud early on.