Hi all my lo is 4.5 months and for the last 3-4 weeks has been doing this really strange behaviour. If her head is at the same level as mine she opens her mouth and tries to kind of cover mine! When I let her do what she wanted to see what would happen she started sucking my lips and chin. I am guessing this is teething related, as I know that she does appear to be teething, anyone else had this from their lo's?