Mom?

When did I go from "Mommy" to "Mom"? I didn't put in for a name change, nor did I approve one. Suddenly Jack has become a big boy too cool to call me "Mommy" unless he is hurt. I don't think I am old enough to be "Mom". I really just got used to being a mommy! It is only a matter of time before he won't let me kiss him when I drop him off at school, then he won't let me drop him off in front of the school, then he will be driving himself...I feel a midlife crisis coming on!