Question, weird.

Lately my son who will be two in September has become REALLLLLY clingy to me and his day care teacher. She keeps telling me that he doesn't want her to put him down and loses his mind when she does. he never used to do this. also tonight he pulled up my shirt and was talking with his lips pressed against my stomach saying "baby". Wtf? has anyone else dealt with this? we have been TTC for 6 months with no luck.