Did anyone's cats get super clingy before you went into labor?

My cat has not been very cuddly since we got him. He would only sleep with us occasionally and I'd usually find him sleeping on the couch when I woke up in middle if the night. But today he has been attached to me almost all day. While I was cooking he was sitting between my legs and even on my shoulders when I picked him up. And now that I'm laying down he is sleeping on my chest. And rubbing against me and purring.