1)You get used to having baby drool on your clothes and will only consider a shower and change if there is baby vomit as well as drool on them.
2) You're constantly preoccupied with the baby's development.This becomes your favorite reading topic. Scratch that. It becomes your ONLY reading topic. For example, mine will be 7 months old soon - and yet he shows no inclination to sit up. Some of the baby books say he should be sitting up with support. What does support mean? Because other baby books say I shouldn't try to push him too soon incase I cause damage to his spine. So what constitutes support and what constitutes pushing too hard too soon?
On one hand I have this instinctive aversion to making him do anything he doesn't want to do. On the other hand I can't get over treating him like a new pet or sth. I keep wanting him to do new tricks!
3) You struggle with existential questions like are swimming pools ever clean enough for your child?
4) You catch yourself doing baby talk while on the phone with strangers - and this does not embarrass you.
5) You dread your baby's vaccination shots for days before they're due.