I hear you - they grow up so fast. Everytime my daughter dances with her father (you know, the whole baby-girl-on-daddy's-feet kind of dancing?) I get misty because I can picture them together on her wedding day. I'm a dork, I know, it's at least 20 years away, but I can't help it. I hope your son likes his new school.
Also, we went to an amusement park two weeks ago and it was so pathetic - I couldn't get off one of the rides without the attendant helping me. EMBARRASSING!!!! Never want to have that experience again.... So I'm glad you were just tired and not humiliated.